Relevant bibliographies by topics / Optical intensity distribution

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Optical intensity distribution'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Optical intensity distribution"

1

Barcik, Peter, Otakar Wilfert, Erich Leitgeb, and Lucie Hudcova. "Optimal distribution of the optical intensity within a laser beam for optical wireless communications." IET Optoelectronics 9, no. 5 (October 2015): 263–68. http://dx.doi.org/10.1049/iet-opt.2014.0153.

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Hirai, Yoshihiko, Hisao Kikuta, and Toshikazu Sanou. "Study on optical intensity distribution in photocuring nanoimprint lithography." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 21, no. 6 (2003): 2777. http://dx.doi.org/10.1116/1.1629717.

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Guo, Shuwei, Fei Sun, and Sailing He. "Optical surface transformation for reshaping the field intensity distribution." Journal of the Optical Society of America B 33, no. 9 (August 9, 2016): 1847. http://dx.doi.org/10.1364/josab.33.001847.

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Welberry, T. R., and R. L. Withers. "Optical transforms of disordered systems displaying diffuse intensity loci." Journal of Applied Crystallography 20, no. 4 (August 1, 1987): 280–88. http://dx.doi.org/10.1107/s0021889887086667.

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A method is described of synthesizing a real-space distribution of scattering points which will give rise to virtually any required diffraction pattern. The distribution may be used in the form of an optical diffraction screen to give an immediate visual check on both the real-space and reciprocal-space distributions. The method is applied to two examples which exhibit electron diffraction patterns with diffuse intensity distributed in the form of complex loci in reciprocal space: certain transition-metal niobium sulfide intercalates in which ordering of metal ions and vacancies occurs; and the high-temperature phase of 1T tantalum disulfide in which phenomena due to charge-density waves (CDW) and accompanying periodic lattice distortions (PLD) are observed. It is shown how useful statistical information concerning the local ordering may be obtained from the resulting lattice realizations.
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Wang, Huai Sheng. "Research on Applied Technology with the Characteristic of the Spatial Fresnel Diffraction Field of a Circle Aperture Illuminated by a Hyperbolic Secant Optical Pulse." Advanced Materials Research 859 (December 2013): 473–76. http://dx.doi.org/10.4028/www.scientific.net/amr.859.473.

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Based on the Fresnel diffraction theory and the principle of Fourier transformation, an equation is put forward to analyze the spatial diffraction intensity distribution of a circle aperture illuminated by a hyperbolic secant optical femtosecond pulse. The spatial diffraction intensity distributions are determined by the distance, the radius of the circle aperture, the Fresnel number, the width and the central wavelength of the hyperbolic optical pulse. Number calculation shows that when the radius of the circle aperture is definite, the spatial diffraction intensity is a function of the distance z. If the distance is definite, the spatial diffraction intensity is a function of the radius of the circle aperture. In a definite extent the spatial diffraction intensity remains approximately a constant. A constant spatial intensity distribution is good for optical imaging and laser fusion.
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Stsepuro, Nikita, Pavel Nosov, Maxim Galkin, George Krasin, Michael Kovalev, and Sergey Kudryashov. "Generating Bessel-Gaussian Beams with Controlled Axial Intensity Distribution." Applied Sciences 10, no. 21 (November 8, 2020): 7911. http://dx.doi.org/10.3390/app10217911.

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This paper investigated the diffraction of a Gaussian laser beam on a binary mask and a refractive axicon. The principles of the formation of a zero-order Bessel beam with sharp drops of the axial field intensity edges were discussed. A laser optical system based on an axicon for the formation of a Bessel beam with quasi-uniform distribution of axial field intensity was proposed. In the laser optical system, the influence of the axicon apex did not affect the output beam. The results of theoretical and experimental studies are presented. It is expected that the research results will have practical application in optical tweezers, imaging systems, as well as laser technologies using high-power radiation.
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Wang, Wei, Xiaoji Li, Sujan Rajbhandari, and Yanlong Li. "Investigation of 3 dB Optical Intensity Spot Radius of Laser Beam under Scattering Underwater Channel." Sensors 20, no. 2 (January 11, 2020): 422. http://dx.doi.org/10.3390/s20020422.

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An important step in the design of receiver aperture and optimal spacing of the diversity scheme for an underwater laser communication system is to accurately characterize the two-dimensional (2D) spatial distribution of laser beam intensity. In this paper, the 2D optical intensity distribution and 3 dB optical intensity spot radius (OISR) are investigated due to the dominating optical intensity of laser beam being within the 3 dB OISR. By utilizing the Henyey–Greenstein function to compute the scattering angles of photons, the effects of the scattering underwater optical channel and optical system parameters on 3 dB OISR are examined based on the Monte Carlo simulation method. We have shown for the first time that in the channel with a high density of scattering particles, the divergence angle of the laser source plays a negligible role in 3 dB OISR. This is an interesting phenomenon and important for optical communication as this clearly shows that the geometric loss is no longer important for the design of receiver aperture and optimal spacing of the diversity scheme for the underwater laser communication system in the highly scattering channel.
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Zhang Hao, Chang Chen-Liang, and Xia Jun. "Detection optical vortex topological charges with monocyclic multistage intensity distribution." Acta Physica Sinica 65, no. 6 (2016): 064101. http://dx.doi.org/10.7498/aps.65.064101.

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Wojtanowski, Jacek, Maciej Traczyk, Marek Zygmunt, Zygmunt Mierczyk, Piotr Knysak, and Tadeusz Drozd. "Intensity distribution angular shaping – Practical approach for 3D optical beamforming." Optics & Laser Technology 64 (December 2014): 220–26. http://dx.doi.org/10.1016/j.optlastec.2014.05.007.

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Bulygin, F. V., I. V. Goryainova, A. A. Kovalev, and K. D. Maramzin. "Measurement of the laser beam intensity distribution using optical tomography." Technical Physics 52, no. 7 (July 2007): 907–10. http://dx.doi.org/10.1134/s1063784207070122.

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Dissertations / Theses on the topic "Optical intensity distribution"

1

Pavlů, Michal. "Modelování vícekanálového optického bezkabelového spoje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219817.

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This thesis deals with multi-channel wireless links with a higher range designated for free-space communications in an atmospheric media. Propagation of the optical beam in an atmosphere is analysed and various influences affecting the quality of the transmitted signal are described. The simulation is carried out for dual optical link. Link budget of individual paths working at the wavelengths in the atmospheric windows – 850 nm and 1550nm. It also examined optical intensity distribution of the transmitted beam. At the end of the work performed measurements and simulations verify the accuracy of the components used in wireless link.
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Křivák, Petr. "Optické bezkabelové spoje s velkým dosahem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233453.

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This dissertation thesis deals with a long range free space optical links for communication over the distance of few tens of kilometers in the atmosphere. The problematic of the beam propagation and atmospheric effects influencing the beam and the quality of the communication protocol are discussed. The measuring link is also designed to study the parameters of the communication link work conditions. The measuring link consists of two heads. The transmitter head is designed to use two optical beams with laser diodes at the wavelength of the atmospheric windows 850 or 1550 nm and the overall power of hundredths of mW. The receiver head includes the Fressnel lens. For the detection of very weak signal, the avalanche photodiode is used. In the end of this work, due to the high power of the transmitting optical beam, the laser safety conditions are also discussed, including the deduced optical transmitters construction recommendations.
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He, Weiyi. "Optical Design of Beam Shaping Optics for Camera Probe and LED Light Illumination Used for Minimally Invasive Abdominal Surgery." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3532.

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The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to be used for minimally invasive abdominal surgery. Beam shaping optical reflectors were studied to increase the intensity distribution of the LED beam directed toward a close-by target surface. A CMOS/CCD camera and lens was used to image the targeted area. In addition, extensive optical ray tracing simulations were made to predict the intensity patterns. The experimental measurements and ray tracing simulations were in good agreement, and indicated that 20 degree cone reflectors for the LED sources and appropriate micro-lens/CCD chip imaging optics should provide a useful image at a working distance of about 5 cm.
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Mazánková, Věra. "Spektroskopické studium dohasínajících výbojů v dusíku a jeho směsích." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-233291.

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Presented thesis gives results obtained during the spectroscopic observations of post –discharges of the pure nitrogen plasma with small oxygen admixture and in the nitrogen – argon mixture and the effect of the pink afterglow in it. The DC discharge in the flowing regime has been used for the plasma generation. The decaying plasma was study by optical emission spectroscopy, mainly in the range of 300–800 nm. The first positive, second positive, first negative nitrogen spectral system and NO spectral systems were observed in measured spectra. The band head intensities of these bands have been studied in the dependencies on experimental conditions. Simultaneously, the relative vibrational populations on the given nitrogen states have been calculated. Two discharge tubes made from different materials (PYREX glass and QUARTZ glass) were used in the case of nitrogen plasma containing low oxygen traces (up to 0.2 %). These experiments have been carried out at two wall temperatures for the determination of the temperature effect on the post-discharge. The discharge tube around the observation point was kept at the ambient temperature (300 K) or it was cooled down to 77 K by liquid nitrogen vapor. The total gas pressure of 1 000 Pa and the discharge current of 200 mA were conserved for all these experiments. The relative populations of electronic states were calculated in the dependence on the post-discharge time. The dependencies on oxygen concentration were given, too. The results showed no simple dependence of vibrational populations on oxygen concentration. Generally, slight increase of neutral nitrogen states populations was observed with the increase of oxygen concentration. These observations were well visible due to the intensity of nitrogen pink afterglow effect that was well visible at all oxygen concentrations. The pink afterglow maximal intensity was reached at about 5–10 ms at the wall temperature of 300 K in the PYREX tube. The molecular ion emission was strongly quenched by the oxygen and as this was dominant process for the pink afterglow emission the pink afterglow effect disappears at oxygen concentration of about 2000 ppm. The temperature and wall material influences were observed, too. The post-discharge in nitrogen argon mixtures was studied only in the PYREX tube at the ambient wall temperature of 300 K. The power dissipated in an active discharge was constant of 290 kW. The experimental studies had two new parameters – total gas pressure (500 Pa – 5 000 Pa) and the argon concentrations that were varied in the range of 0–83 %. Also in this case the dependencies of relative intensities of the bands given above were obtained and further the relative populations of electronic states as a function of decay time, total gas pressure and on argon concentration were obtained. The pink afterglow effect was observed at all applied discharge powers and total gas pressures. At the highest argon concentrations, especially at lower pressure, the pink afterglow effect disappeared. The presented experimental work is one of the hugest sets of experiments in the nitrogen with oxygen traces and in nitrogen-argon mixtures. These data can be used as a very good fundament for the further studies using wide numeric modeling of the post-discharge kinetic processes.
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Škrob, Robin. "Digitalizace snímaní rozložení optické intenzity." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217685.

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This Master’s thesis solves a design and construction of device for gathering and transfer of data into computer. The device should replace graph plotter, by which is measured the optical intensity of a laser beam. From this characteristic it is possible to determine other parameters of the laser beam, such as halfwidth of the beam, angle of divergence and Rayleigh length. The described device - “data gatherer” - measures two voltage values – voltage detected on photodiode and voltage detected on distance moved by photodiode. Measured values of voltage are processed and sent through a serial line into the computer. A pre-amplifier is connected to the control part for both channels of measured values with possibility of amplification. Computer application, which performs graphic interpretation of the measured values, serves as user control peripheral. The product of this project is compact device operating under OS Windows with graphic output.
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Golubev, Martin. "Program pro výpočet rozložení optické intenzity." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-219957.

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This diploma thesis deals with system for visible light communication (VLC). There are described basic optical elements like a electroluminescence diode and photodiode. In next chapter is described design of transmitter, optical channel and receiver. Attention is also devoted to modulation suitable for optical communication. The last chapter is devoted to program in Matlab language, which's name is Program for calculation of optical intensity distribution. That program was created in this diploma theses.
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Slagmolen, Bram Johannes Jozef, and BRAM SLAGMOLEN@ANU EDU AU. "Direct Measurement of the Spectral Distribution of Thermal Noise." The Australian National University. Faculty of Science, 2005. http://thesis.anu.edu.au./public/adt-ANU20051128.104552.

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This thesis investigates the direct measurement of the thermal noise spectral distribution. Long base line gravitational wave detectors, being commissioned around the world, are limited in sensitivity in the intermediate frequencies by the thermal noise. These detectors are utilising suspended test mirrors for the detection of gravitational waves by measuring their relative displacement. One of the fundamental noise sources in these detectors is the thermally induced displacement of the suspension onto and within the mirrors. This thermally induced motion of the test mirrors limits the displacement sensitivity of the gravitational wave detectors. Knowledge of the spectral behavior of thermal noise over a wide frequency range will improve predictions and understanding of the behavior of the suspension and test mirrors.¶ In this thesis the direct measurement of the thermal noise spectral distribution of a mechanical flexure resonator is described. The mechanical flexure resonator is an unidirectional ’wobbly table’ made from copper-beryllium, which hinges around four thin flexures 15 mm wide, 1 mm high and ~116 µm thick. The mechanical flexure resonator has a resonant frequency of 192 Hz, with a quality factor of ~3000.¶ The thermal noise induced displacement of the mechanical flexure resonator was measured using an optical cavity. The end mirror of a two mirror optical cavity was mounted on the mechanical flexure resonator. A laser was made resonant with the test cavity by use of a locking control system. Thermal noise induced displacement moved the test cavity away from resonance. By measuring the error-signal in the control system, the equivalent thermal noise displacement was obtained.¶ The thermal noise induced displacement of the mechanical flexure resonator was predicted to be in the order of 10^(−12) to 10^(−17) m/sqrtHz over a frequency range of 10 Hz to 10 kHz. All other external noise sources needed to be suppressed to below this level. A major noise source was the laser frequency fluctuations. When the test cavity was locked to the laser, the laser frequency fluctuations dominated the read out signal. To suppress the frequency fluctuations, the laser was locked to a rigid long optical reference cavity. This allowed the frequency fluctuations to be suppressed to below the equivalent thermal noise displacement of the test cavity over the frequency range of interest.¶ Acoustic noise was suppressed by placing the whole experiment inside a vacuum chamber, and evacuating the air inside the chamber down to a pressure level of 10^(−4) mbar. A seismic vibration isolation system was used to suppress the seismic noise in the laboratory to below 10^(−14) m/sqrtHz at frequencies above 4 Hz.¶ With the experimental set up, the thermal noise displacement of the mechanical flexure resonator has been measured. Due to the degradation of the isolator performance, measurement of the thermal noise behavior over a wide frequency range of the mechanical flexure resonator was unsuccessful. By using an analytical curve fitting routine around the fundamental and first order resonant modes of the resonator, a loss factor of (3.5 ± 1.5 − 3.7 ± 1.5) × 10^(−4) for the copper-beryllium mechanical flexure resonator was obtained and structural damping was inferred.
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Weng, Yang, and 翁洋. "Underwater Vehicle Navigation Based upon Light Intensity Distribution in an Optical Beam." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/a3e654.

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碩士
國立臺灣大學
工程科學及海洋工程學研究所
106
The autonomous underwater vehicle (AUV) can be deployed to harvest deep ocean monitoring data from seafloor sensors, which turns out to be an economic method. The underwater optical communication systems that have wide bandwidth and high data rate are utilized in this concept for data mule. In order to optimize the transfer rate, an AUV needs to estimate and locate the center point of optical signal coverage area. The light intensity distribution based navigation algorithm is proposed in this study. Theoretical analysis and Monte Carlo simulations can prove all light intensity distributions measured on any straight path within communication range are normal distribution and their standard deviations are same. This algorithm presents a method to estimate the location of center point by measured standard deviations of distribution. Particle filter is implemented to update the belief of location with the standard deviation measurement of each straight AUV path. An underwater vehicle equipped with wireless optical communication device is designed for sea trial. The data transmission experiment was conducted between the vehicle and the seafloor sensor. The navigation algorithm was tested using the experimental data, which locates the center point within a designated error bound.
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LEE, CHUNG-HAO, and 李中皓. "Observation of Internal Light Intensity Distribution of Light Emitting Diodes Grown on Patterned Sapphire Substrate by Optical Microscopy." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/83264250963170104089.

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碩士
國立臺灣科技大學
電子工程系
102
In general, the light emitting diodes (LEDs) are discussed its luminous quality by the variation of external light of LED. We use optical microscopy in combination of high magnification objective lens and mobile platform, We could focus on the surface and lateral regions of LED to investigate the epitaxy quality. Through the optical system we would investigate the light intensitiy distribution of pattern when the light emit in the patterned sapphire substrate, and we verify this phenomenon by lighttools optical simulation software. We could merger different luminous regions of LED by the different injection current. As the different injection current, we could investigate that current spreading in the internal regions of LED was not uniform. The light intensity would stronger concentrate in the nearby electrode regions. When the injection current increased, and the phenomenon was more obvious. Then we study of far-field light pattern variation between non-patterned sapphire substrate and patterned sapphire substrate. The results showed that far-field light pattern had same profile between non patterned sapphire substrate and patterned sapphire substrate LED. Finally, we design four different shapes of patterned sapphire substrates. We changed pattern’s spacing, height and radius to investigate the effects of light extraction efficiency. As the results showed that the light extraction efficiency higher when the pattern’s spacing was closer. We found that the pattern shape which aspect ratio = 1 has the best effect to enhance the extraction efficiency. The cone shape which has the highest light extraction efficiency 34%, and the enhancement of light extraction efficiency was 72 % compare with non-patterned sapphire substrate LED. Apply this system to measure in the internal regions of LED, the truly influence of the patterned sapphire substrate effect on LED would be performed. For designing greater efficiency light-emitting diode chip provides reference and assistance in the future.
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Books on the topic "Optical intensity distribution"

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Obarski, Gregory E. Measurement assurance program for the spectral density of relative intensity noise of optical fiber sources near 1550 nm. [Gaithersburg, Md.]: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Obarski, Gregory E. Measurement assurance program for the spectral density of relative intensity noise of optical fiber sources near 1550 nm. [Gaithersburg, Md.]: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Obarski, Gregory E. Measurement assurance program for the spectral density of relative intensity noise of optical fiber sources near 1550 nm. [Gaithersburg, Md.]: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Measurement assurance program for the spectral density of relative intensity noise of optical fiber sources near 1550 nm. [Gaithersburg, Md.]: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Book chapters on the topic "Optical intensity distribution"

1

Bhattacharya, Indrani, and Lakshminarayan Hazra. "Transverse Intensity Distribution on the Far-Field Plane of Azimuthal Walsh Filters." In Progress in Optical Science and Photonics, 21–47. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6099-6_2.

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Bhattacharya, Indrani, and Lakshminarayan Hazra. "Transverse Intensity Distribution in the Far-Field Region of Azimuthal Walsh Filters." In Progress in Optical Science and Photonics, 57–90. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6099-6_4.

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Dev, Vasu, Andra Naresh Kumar Reddy, and Vishwa Pal. "Design of Diffractive Optical Elements for Shaping the Laser Intensity Distribution." In Springer Proceedings in Physics, 89–91. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_20.

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Bhattacharya, Indrani, and Lakshminarayan Hazra. "Self-similarity in Transverse Intensity Distributions on the Far-Field Plane of Self-similar Azimuthal Walsh Filters." In Progress in Optical Science and Photonics, 49–56. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6099-6_3.

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Bhattacharya, Indrani, and Lakshminarayan Hazra. "Self-Similarity in Transverse Intensity Distributions in the Far-Field Region of Self-Similar Azimuthal Walsh Filters." In Progress in Optical Science and Photonics, 91–111. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6099-6_5.

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BUCKINGHAM, A. D., B. J. ORR, and J. M. SICHEL. "Angular distribution and intensity in molecular photoelectron spectroscopy I. General theory for diatomic molecules." In Optical, Electric and Magnetic Properties of Molecules, 245–55. Elsevier, 1997. http://dx.doi.org/10.1016/b978-044482596-4/50033-6.

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ZHOU, Q., H. DAI, X. ZHU, H. T. ZHOU, and C. Q. WANG. "ANALYSIS ON INTENSITY DISTRIBUTION IN A HIGH-THROUGHPUT PROBE OF SCANNING NEAR-FIELD OPTICAL MICROSCOPE." In Near-Field Optics, 222–27. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812792556_0033.

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Kirk, John T. O. "The Relationship between the Inherent and the Apparent Optical Properties of Surface Waters and its Dependence on the Shape of the Volume Scattering Function." In Ocean Optics. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195068436.003.0006.

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Let us begin by reminding ourselves just what we mean by “the inherent optical properties” and “the apparent optical properties” of surface waters. The inherent optical properties are those that belong to the aquatic medium itself: properties that belong to a small sample of the aquatic medium taken out of the water body just as much as they belong to a great mass of the medium existing within the water body itself. The properties of particular concern to us are the absorption coefficient, a, the scattering coefficient, b, and the volume scattering function, β(θ). The absorption coefficient at a given wavelength is a measure of the intensity with which the medium absorbs light from a parallel beam per unit pathlength of medium (see Eq. 1.18). The scattering coefficient at a given wavelength is a measure of the intensity with which the medium scatters light from a parallel beam per unit pathlength of medium (see Eq. 1.17). Both a and b have the units, m-1. The normalized volume scattering function specifies the angular (θ) distribution of single-event scattering around the direction of a parallel incident beam. It is often normalized to total scattering and referred to as the scattering phase function, P(θ) (see Eq. 1.21). Since these properties belong, as I have already said, to a small sample of the medium, just as much as they do to a great slab of ocean, they can be measured in the laboratory. The absorption coefficients at various wavelengths can be measured with a suitable spectrophotometer: the scattering coefficient and the volume scattering function can be measured with a light scattering photometer. The apparent optical properties are not properties of the aquatic medium as such although they are closely dependent on the nature of the aquatic medium. In reality they are properties of the light field that, under the incident solar radiation stream, is established within the water body.
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Duffie, Darrell. "Search for Counterparties." In Dark Markets. Princeton University Press, 2012. http://dx.doi.org/10.23943/princeton/9780691138961.003.0003.

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This chapter introduces the modeling of search and random matching in large economies. The objective is to build intuition and techniques for later chapters. After some mathematical prerequisites, it defines the notion of random matching. It then invokes the law of large numbers to calculate the cross-sectional distribution of types of matches. This is extended to multiperiod search, first in discrete-time settings and then in continuous time. The optimal search intensity of a given agent, given the cross-sectional distribution of types in the population, is characterized with Bellman's principle. The chapter then briefly takes up the issue of equilibrium search efforts.
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Adam, John A. "An Improvement over Ray Optics: Airy’s Rainbow." In Rays, Waves, and Scattering. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691148373.003.0005.

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This chapter discusses the optics of the rainbow as theorized by Sir George Biddle Airy. Airy developed a theory that quantified the dependence upon the raindrop size of the rainbow's angular width and angular radius as well as the spacing of the supernumeraries. The Airy theory also predicted a non-zero distribution of light intensity in Alexander's dark band and a finite intensity at the angle of minimum deviation. However, it could not predict precisely the angular position of many laboratory-generated rainbows, leading several mathematical physicists to seek a more complete theory of scattering. The chapter examines the Airy approximation by performing calculations, taking into account some ray prerequisites and the Airy wavefront. It also explains how colors are distributed in the Airy rainbow before concluding with a derivation for arbitrary p in the case of the Airy wavefront.
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Conference papers on the topic "Optical intensity distribution"

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Moreno, Ivan. "LED intensity distribution." In International Optical Design Conference. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/iodc.2006.tud6.

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Moreno, Ivan, Chang-Yu Tsai, David Bermúdez, and Ching-Cherng Sun. "Simple function for intensity distribution from LEDs." In Optical Engineering + Applications, edited by Roland Winston and R. John Koshel. SPIE, 2007. http://dx.doi.org/10.1117/12.735820.

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Muzychko, O. "Precision measurement of LED angular intensity distribution." In Optical Engineering + Applications, edited by Angela Duparré, Bhanwar Singh, and Zu-Han Gu. SPIE, 2007. http://dx.doi.org/10.1117/12.739059.

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Reddy, Salla Gangi, Shashi Prabhakar, R. P. Singh, and Ashok Kumar. "Spatial intensity distribution of optical vortex beams." In 2013 Workshop on Recent Advances in Photonics (WRAP). IEEE, 2013. http://dx.doi.org/10.1109/wrap.2013.6917662.

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Vitasek, Jan, Jan Latal, Jan Skapa, Petr Koudelka, Frantisek Hanacek, Petr Siska, and Vladimir Vasinek. "The optical intensity distribution in the far field." In 2011 34th International Conference on Telecommunications and Signal Processing (TSP). IEEE, 2011. http://dx.doi.org/10.1109/tsp.2011.6043762.

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Vitasek, Jan, Jan Latal, Jan Skapa, Petr Koudelka, František Hanaek, Petr iška, and Vladimir Vašinek. "The optical intensity distribution in the far field." In Free-Space Laser Communication Technologies XXIII. SPIE, 2011. http://dx.doi.org/10.1117/12.877768.

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Raval, Jay K., Wayne N. P. Hung, and Bruce L. Tai. "Multiphase Flow Distribution in MQL Drilling Using Optical Intensity Distribution Based Approach." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2926.

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Abstract:
Abstract Oil flow distribution in Minimum Quantity Lubrication (MQL) plays an important role in the efficiency of machining processes, but it remains challenging to measure experimentally. This paper presents a new method to measure the oil flow distribution in through-channel drill bits based on the reflected light intensity. Measurements were conducted from multiple angles in order to map the flow distribution across the channel cross-sectional area. The method is applied to drill bits of a circular cross-section channel and two helix angles, 0° and 30°. The results show that, for the 0° helix angle channel, the oil concentrates near the periphery of the channel, while for 30° helix angle channel, the oil concentrates towards the center of the drill point. Furthermore, Computational Fluid Dynamics (CFD) simulation was conducted to compare with the measurement results, and it was observed that the oil distribution is correlated to the velocity field. Oil flow concentration is high in low velocity regions. Though preliminary, this study has concluded that the velocity field generated using single-phase CFD is a critical indicator for oil distribution in an MQL flow.
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Cao, Hui, R. Sarma, Y. Bromberg, Alexey Yamilov, and Sasha Petrenko. "Control of Optical Intensity Distribution inside a Disordered Waveguide." In Frontiers in Optics. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/fio.2016.fw2d.1.

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Alonzo, Carlo A., Peter J. Rodrigo, Ivan R. Perch-Nielsen, and Jesper Glückstad. "Three-dimensional intensity distribution of helico-conical optical beams." In Integrated Optoelectronic Devices 2007, edited by David L. Andrews, Enrique J. Galvez, and Gerard Nienhuis. SPIE, 2007. http://dx.doi.org/10.1117/12.700055.

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Böhm, J. A., A. Vernes, and M. J. Vellekoop. "Ab initio intensity distribution of diffusely scattered light from rough metallic surfaces." In SPIE Optical Metrology, edited by Bernd Bodermann. SPIE, 2011. http://dx.doi.org/10.1117/12.889489.

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Reports on the topic "Optical intensity distribution"

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Tobias, Benjamin John. A series approximation model for optical light transport and output intensity field distribution in large aspect ratio cylindrical scintillation crystals. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1416275.

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