Log in

Relevant bibliographies by topics / Quadrant Photodiode / Journal articles

To see the other types of publications on this topic, follow the link: Quadrant Photodiode.

Journal articles on the topic 'Quadrant Photodiode'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Quadrant Photodiode.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Kukurudziak, M. S. "A method of increasing the interquadrant resistance of four-quadrant p-i-n photodiodes." Journal of Instrumentation 19, no. 09 (2024): P09006. http://dx.doi.org/10.1088/1748-0221/19/09/p09006.

Full text

Abstract:

Abstract The paper investigates the influence of the insulation resistance of the responsive elements and the guard ring of a silicon 4-quadrant photodiode on its dark currents. It was found that a decrease in the insulation resistance leads to an increase in the dark current of the guard ring and responsive elements. It was found that the insulation resistance deteriorates due to the formation of surface inversion layers at the interface Si-SiO2. A method of increasing the insulation resistance of the active elements of the photodiode by etching oxide in the gaps between the responsive elemen

APA, Harvard, Vancouver, ISO, and other styles

2

Faizullin, Dmytro, Koju Hiraki, HORYU, and Mengu Cho. "IMPROVEMENT OF SUN ANGLE ACCURACY FROM IN-ORBIT DATA OF A QUADRANT PHOTODIODE SUN SENSOR." International Journal of Research -GRANTHAALAYAH 5, no. 5 (2017): 54–67. http://dx.doi.org/10.29121/granthaalayah.v5.i5.2017.1837.

Full text

Abstract:

The sun vector is commonly used for defining a satellite attitude and many types of sensors exist for its determination. A fine pinhole sun sensor type was chosen and designed for HORYU-IV nanosatellite of Kyushu Institute of Technology. This sensor has a round-shaped hole and uses commercial off-the-shelf silicon photodiode, which consists of four small sensitive elements arranged close to each other. This type of sensors commonly uses look-up tables for providing high accuracy, which requires a large amount of data to be saved. Polynomial methods for sun vector determination were considered

APA, Harvard, Vancouver, ISO, and other styles

3

Dmytro, Faizullin, Hiraki Koju, team HORYU-IV, and Cho Mengu. "IMPROVEMENT OF SUN ANGLE ACCURACY FROM IN-ORBIT DATA OF A QUADRANT PHOTODIODE SUN SENSOR." INTERNATIONAL JOURNAL OF RESEARCH- GRANTHAALAYAH 5, no. 5 (2017): 54–67. https://doi.org/10.5281/zenodo.583886.

Full text

Abstract:

The sun vector is commonly used for defining a satellite attitude and many types of sensors exist for its determination. A fine pinhole sun sensor type was chosen and designed for HORYU-IV nanosatellite of Kyushu Institute of Technology. This sensor has a round-shaped hole and uses commercial off-the-shelf silicon photodiode, which consists of four small sensitive elements arranged close to each other. This type of sensors commonly uses look-up tables for providing high accuracy, which requires a large amount of data to be saved. Polynomial methods for sun vector determination were considered

APA, Harvard, Vancouver, ISO, and other styles

4

Barbarić, Ž. "Sensitivity of a Position Sensitive Detector with Quadrant Photodiode." Optics 2, no. 2 (2013): 38. http://dx.doi.org/10.11648/j.optics.20130202.12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Leihong Zhang, 张雷洪, 杨艳 Yan Yang, 夏文兵 Wenbing Xia, 朱小磊 Xiaolei Zhu, 陈卫标 Weibiao Chen, and 陆雨田 Yutian Lu. "Linearity of quadrant avalanche photodiode in laser tracking system." Chinese Optics Letters 7, no. 8 (2009): 728–31. http://dx.doi.org/10.3788/col20090708.0728.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ng, T. W., S. L. Foo, and H. Y. Tan. "Gaussian laser beam diameter measurement using a quadrant photodiode." Review of Scientific Instruments 76, no. 6 (2005): 065110. http://dx.doi.org/10.1063/1.1928189.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Ng, T. W., H. Y. Tan, and S. L. Foo. "Small Gaussian laser beam diameter measurement using a quadrant photodiode." Optics & Laser Technology 39, no. 5 (2007): 1098–100. http://dx.doi.org/10.1016/j.optlastec.2006.06.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Jiang, Yuqiang, Honglian Guo, Chunxiang Liu, et al. "Influence of Illumination Conditions on Temperature in Sample Cell and the Output of a Quadrant Detector in an Optical Tweezers System." Microscopy Today 13, no. 3 (2005): 44–49. http://dx.doi.org/10.1017/s1551929500051646.

Full text

Abstract:

In an optical tweezers system, the output signal of a photodiode quadrant detector and the temperature in a sample cell are two key factors for the quantitative measurements of mechanical properties of living biological objects such as cells, organelles and macro-molecules. In order to enhance the output of a quadrant detector and effectively control the temperature in a sample cell, the dependence of the temperature in the sample cell and the output of the quadrant detector for different illumination conditions are studied. The results show that appropriate illumination conditions can ensure

APA, Harvard, Vancouver, ISO, and other styles

9

Kukurudziak, M. S. "Influence of Surface Resistance of Silicon p-i-n Photodiodes n+-Layer on their Electrical Parameters." Physics and Chemistry of Solid State 23, no. 4 (2022): 756–63. http://dx.doi.org/10.15330/pcss.23.4.756-763.

Full text

Abstract:

Silicon quadrant p-i-n photodiodes of different concentrations of diffused phosphorus in the n+- layer were fabricated. The experimental curve of phosphorus impurity distribution along the depth of the diffusion layer is obtained. The influence of charge carrier concentration in this layer on the dark currents of responsive elements and the guard ring was studied. Volt-ampere characteristics of photodiodes were measured. It was seen that when the surface resistance of the n+-layer decreases, the dark currents decrease, the samples with a surface resistance of 1,9 – 2,4 Ohm / □ have approximate

APA, Harvard, Vancouver, ISO, and other styles

10

Yoshizawa, Toru, and Akiyoshi Tochigi. "Optical Displacement Sensor Utilizing Contrast Variation of Projected Patterns." Journal of Robotics and Mechatronics 2, no. 1 (1990): 53–55. http://dx.doi.org/10.20965/jrm.1990.p0053.

Full text

Abstract:

A system has been developed and tested for the optical noncontact measurement of displacement which consists of a light source, an objective lens, a quadrant pattern and a quadrant photodiode. The principle is based on the detection of contrast variation of a projected pattern. This system uses an one-axis method and shows good characteristics, in particular that it is not influenced by the color and inclination of the surface. The dynamic range in the measurement is 150μm with vertical resolution of 1μm. The principle of the method is verified with experimental tests.

APA, Harvard, Vancouver, ISO, and other styles

11

Awadelgied, A. M., K. I. Hajim, and K. A. Al-Naime. "Design and Construction of the Detection Unit in Laser Tracking System." FES Journal of Engineering Sciences 4, no. 1 (2009): 18. http://dx.doi.org/10.52981/fjes.v4i1.48.

Full text

Abstract:

We present the design and construction evidence of a laser tracking system. This system is consists of an optical part representing by two reflective elements, optoelectronic part( quadrant photodiode detector), and mechanical part The dimensions of these parts as well as the focal length and the radius of tracking region, is achieved.

APA, Harvard, Vancouver, ISO, and other styles

12

JIANG, YUQIANG, HONGLIAN GUO, CHUNXIANG LIU, et al. "INFLUENCE OF ILLUMINATION CONDITIONS ON THE MEASUREMENT OF OPTICAL TWEEZERS SYSTEM." International Journal of Modern Physics B 20, no. 06 (2006): 659–66. http://dx.doi.org/10.1142/s0217979206033553.

Full text

Abstract:

In an optical tweezers system, the output signal of a photodiode quadrant detector and the temperature in a sample cell are two key factors for the quantitative measurements of mechanical properties of living biological objects such as cells, organelles and macro-molecules. In order to enhance the output of a quadrant detector and effectively control the temperature in a sample cell, the dependence of the temperature in the sample cell and the output of the quadrant detector for different illumination conditions are studied. The results show that appropriate illumination conditions can ensure

APA, Harvard, Vancouver, ISO, and other styles

13

Cincotta, Stefanie, Adrian Neild, Kristian Helmerson, Michael Zenere, and Jean Armstrong. "Accurate Low Complexity Quadrature Angular Diversity Aperture Receiver for Visible Light Positioning." Sensors 24, no. 18 (2024): 6006. http://dx.doi.org/10.3390/s24186006.

Full text

Abstract:

Despite the many potential applications of an accurate indoor positioning system (IPS), no universal, readily available system exists. Much of the IPS research to date has been based on the use of radio transmitters as positioning beacons. Visible light positioning (VLP) instead uses LED lights as beacons. Either cameras or photodiodes (PDs) can be used as VLP receivers, and position estimates are usually based on either the angle of arrival (AOA) or the strength of the received signal. Research on the use of AOA with photodiode receivers has so far been limited by the lack of a suitable compa

APA, Harvard, Vancouver, ISO, and other styles

14

Egorychev, A. N., and L. S. Priver. "Signal conversion diagram from a quadrant photodiode mounted in an autocollimator." Measurement Techniques 32, no. 5 (1989): 426–28. http://dx.doi.org/10.1007/bf00866217.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Chen, C.-J., W. Jywe, and C.-M. Pan. "Development of a quadrant photodiode plate for machine tool positioning performance testing." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 224, no. 9 (2010): 1369–75. http://dx.doi.org/10.1243/09544054jem1661.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Aparicio-Esteve, Elena, Alvaro Hernandez, Jesus Urena, and Jose M. Villadangos. "Visible Light Positioning System Based on a Quadrant Photodiode and Encoding Techniques." IEEE Transactions on Instrumentation and Measurement 69, no. 8 (2020): 5589–603. http://dx.doi.org/10.1109/tim.2019.2962563.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Xu, Kai, Jing Li, Gang Du, Chun Li Zhu, Peng Fei Li, and Xiao Ping Wu. "Measurement of Trap Stiffness of Holographic Optical Tweezers with Power Spectrum Method." Advanced Materials Research 787 (September 2013): 423–26. http://dx.doi.org/10.4028/www.scientific.net/amr.787.423.

Full text

Abstract:

A microsphere trapped by optical tweezers moves according to the Brownian motion law, which can be described by the Langevin equation. Based on it, a quadrant photodiode (QD) is used to track the displacement of the microsphere with a diameter of 2.5um trapped by holographic optical tweezers, and power spectrum method is adopted to obtain radial trap stiffness. Experiments show that the trap stiffness increases with the increase of the laser power, and decreases as the distance between the optical trap and the inside bottom surface of the sample cell increases.

APA, Harvard, Vancouver, ISO, and other styles

18

Esper-Chaín Falcón, R., A. Medina Escuela, J. R. Sendra Sendra, and D. Fariña Santana. "Subsampling techniques for gaussian laser beam radius estimation using a configurable quadrant photodiode (CQD)." Optics & Laser Technology 109 (January 2019): 412–17. http://dx.doi.org/10.1016/j.optlastec.2018.07.080.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Perrone, Sandro, Giovanni Volpe, and Dmitri Petrov. "10-fold detection range increase in quadrant-photodiode position sensing for photonic force microscope." Review of Scientific Instruments 79, no. 10 (2008): 106101. http://dx.doi.org/10.1063/1.2993177.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Cincotta, Stefanie, Cuiwei He, Adrian Neild, and Jean Armstrong. "High angular resolution visible light positioning using a quadrant photodiode angular diversity aperture receiver (QADA)." Optics Express 26, no. 7 (2018): 9230. http://dx.doi.org/10.1364/oe.26.009230.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Dmytro, Faizullin, Hiraki Koju, team HORYU-IV, and Cho Mengu. "OPTIMIZATION OF A SUN VECTOR DETERMINATION FOR PINHOLE TYPE SUN SENSOR." International Journal of Research - Granthaalayah 5, no. 7 (2017): 436–49. https://doi.org/10.5281/zenodo.838573.

Full text

Abstract:

The sun vector is commonly used for defining a satellite attitude and many types of sensors exist for its determination. An attitude determination system is designed for each satellite project based on missions’ requirements. A fine pinhole sun sensor type was chosen and designed for HORYU-IV nanosatellite of Kyushu Institute of Technology. This sensor has a round-shaped hole and uses commercial off-the-shelf silicon photodiode, which consists of four small sensitive elements arranged close to each other. This type of sensors commonly uses look-up tables for providing high accuracy, which requ

APA, Harvard, Vancouver, ISO, and other styles

22

Reusch, Tobias, Markus Osterhoff, Johannes Agricola, and Tim Salditt. "Pulse-resolved multi-photon X-ray detection at 31 MHz based on a quadrant avalanche photodiode." Journal of Synchrotron Radiation 21, no. 4 (2014): 708–15. http://dx.doi.org/10.1107/s1600577514006730.

Full text

Abstract:

The technical realisation and the commissioning experiments of a high-speed X-ray detector based on a quadrant avalanche silicon photodiode and high-speed digitizers are described. The development is driven by the need for X-ray detectors dedicated to time-resolved diffraction and imaging experiments, ideally requiring pulse-resolved data processing at the synchrotron bunch repetition rate. By a novel multi-photon detection scheme, the exact number of X-ray photons within each X-ray pulse can be recorded. Commissioning experiments at beamlines P08 and P10 of the storage ring PETRA III, at DESY

APA, Harvard, Vancouver, ISO, and other styles

23

Toyoda, Masahiro. "Measurement of the characteristics of a quadrant avalanche photodiode and its application to a laser tracking system." Optical Engineering 41, no. 1 (2002): 145. http://dx.doi.org/10.1117/1.1418222.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Barbarić, Žarko P., Stojadin M. Manojlović, Boban P. Bondžulić, Milenko S. Andrić, and Srđan T. Mitrović. "New relationship of displacement signal at quadrant photodiode: Control signal analysis and simulation of a laser tracker." Optik 125, no. 4 (2014): 1550–57. http://dx.doi.org/10.1016/j.ijleo.2013.10.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Yifat, Yuval, John Parker, Tian-Song Deng, Stephen K. Gray, Stuart A. Rice, and Norbert F. Scherer. "Facile Measurement of the Rotation of a Single Optically Trapped Nanoparticle Using the Diagonal Ratio of a Quadrant Photodiode." ACS Photonics 8, no. 11 (2021): 3162–72. http://dx.doi.org/10.1021/acsphotonics.1c00802.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

De Bruycker, Jorik, Willem Raes, Stanislav Zvánovec, and Nobby Stevens. "Polarization Differential Visible Light Communication: Theory and Experimental Evaluation." Sensors 20, no. 19 (2020): 5661. http://dx.doi.org/10.3390/s20195661.

Full text

Abstract:

Visible Light Communication (VLC) has received substantial research attention in the last decade. The vast majority of VLC focuses on the modulation of the transmitted light intensity. In this work, however, the intensity is kept constant while the polarization direction is deployed as a carrier of information. Demodulation is realized by using a differential receiver pair equipped with mutually orthogonal polarizers. An analytical expression to evaluate the Signal-to-Noise Ratio (SNR) as a function of the rotation angle of the receiver is derived. It is demonstrated that the signal quality ca

APA, Harvard, Vancouver, ISO, and other styles

27

Wu, Yiting, Elisa Wirthmann, Ute Klöpzig, and Tino Hausotte. "Investigation of a metrological atomic force microscope system with a combined cantilever position, bending and torsion detection system." Journal of Sensors and Sensor Systems 10, no. 2 (2021): 171–77. http://dx.doi.org/10.5194/jsss-10-171-2021.

Full text

Abstract:

Abstract. This article presents a new metrological atomic force microscope (MAFM) head with a new beam alignment and a combined one-beam detection of the cantilever deflection. An interferometric measurement system is used for the determination of the position of the cantilever, while a quadrant photodiode measures the bending and torsion of the cantilever. To improve the signal quality and reduce disturbing interferences, the optical design was revised in comparison to the systems of others (Dorozhovets et al., 2006; Balzer et al., 2011; Hausotte et al., 2012). The integration of the MAFM hea

APA, Harvard, Vancouver, ISO, and other styles

28

Yale, Pavel, Jean-Michel Konin, Michel Kouacou, and Jérémie Zoueu. "New Detector Sensitivity Calibration and the Calculation of the Interaction Force between Particles Using an Optical Tweezer." Micromachines 9, no. 9 (2018): 425. http://dx.doi.org/10.3390/mi9090425.

Full text

Abstract:

We propose a new approach to calculate the sensitivity factor of the detector in optical tweezers. In this work, we used a charge-coupled device (CCD) camera and a quadrant photodiode (QPD) for the extraction of the various positions occupied by the trapped object (in this case, silica beads of different diameters). Image-J software and the Boltzmann statistical method were then used to estimate the sensitivity of the detector. Silica beads of diameter 0.8 µm, 2 µm, a system of 2 µm bead stuck to 4.5 µm one and another system of 2 µm beads stuck to 2 µm one, were studied. This work contributes

APA, Harvard, Vancouver, ISO, and other styles

29

Revel, Jean-Paul. "The atomic-force microscope and its future in biology." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 704–5. http://dx.doi.org/10.1017/s0424820100149350.

Full text

Abstract:

The last few years have been marked by a series of remarkable developments in microscopy. Perhaps the most amazing of these is the growth of microscopies which use devices where the place of the lens has been taken by probes, which record information about the sample and display it in a spatial from the point of view of the context. From the point of view of the biologist one of the most promising of these microscopies without lenses is the scanned force microscope, aka atomic force microscope.This instrument was invented by Binnig, Quate and Gerber and is a close relative of the scanning tunn

APA, Harvard, Vancouver, ISO, and other styles

30

Avinash, Dr Gunti, Saiseshu Reddy, and P. Vijaya Poojitha. "Design and Prototype Development of Quadrant Estimation Unit for Laser Beam Rider Guidance System." International Journal of Engineering and Computer Science 9, no. 03 (2020): 24970–77. http://dx.doi.org/10.18535/ijecs/v9i03.4449.

Full text

Abstract:

With the development of science and technology, precision-strike weapons are been considered to be important for winning victory and defending the country during war (or) attack. Laser guidance is one of the major methods to execute precision-strike in modern warfare. At present, the problems faced at the primary stage of Laser guidance has been solved with endeavors of countries. Several technical aspects of laser-beam riding guided system have been mature, such as atmosphere penetration of laser beam, clutter inhibition on ground, laser irradiator, encoding and decoding of laser beam. Furthe

APA, Harvard, Vancouver, ISO, and other styles

31

Park, Siwoong, Chan Il Yeo, Young Soon Heo, et al. "Tracking Efficiency Improvement According to Incident Beam Size in QPD-Based PAT System for Common Path-Based Full-Duplex FSO Terminals." Sensors 22, no. 20 (2022): 7770. http://dx.doi.org/10.3390/s22207770.

Full text

Abstract:

Free space optical (FSO) communication can support various unmanned aerial vehicles’ (UAVs) applications that require large capacity data transmission. In order to perform FSO communication between two terminals, it is essential to employ a pointing, acquisition, and tracking (PAT) system with an efficient and optimal performance. We report on the development of a common optical-path-based FSO communication system, tailored for applications in UAVs. The proposed system is equipped with a quadrant photodiode (QPD)-based PAT system without an additional beacon beam subsystem. The presented appro

APA, Harvard, Vancouver, ISO, and other styles

32

Lee, Hau-Wei, Tsung-Ting Hsieh, Chin-Chia Liu, and Chien-Hung Liu. "Development of a Flat Type Six-Axis Stage Based on Piezoelectric Actuators." Mathematical Problems in Engineering 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/523786.

Full text

Abstract:

This study presents and investigates a six-DOF (degrees of freedom) piezoelectric based stage for positioning error compensation. The relationship between the displacement of the piezoelectric actuators and the stage can be computed according to the geometric relationships of the actuators installed. In this study, a feedforward compensator based on the hysteresis model has been designed for compensation and a PI controller was used for positioning. The combination of a feedforward compensator and PI controller gives the stage good positioning and tracking performance. Stage position informati

APA, Harvard, Vancouver, ISO, and other styles

33

An, Sangmin, and Katharina-Sophie Isleif. "Optical Simulation and Development towards Compact Sensor Heads using Deep Frequency Modulation Interferometry." tm - Technisches Messen 91, s1 (2024): 90–95. http://dx.doi.org/10.1515/teme-2024-0061.

Full text

Abstract:

Zusammenfassung Die Tiefenfrequenzmodulationsinterferometrie (DFMI) bietet eine vielversprechende Alternative zur klassischen Heterodyn-Interferometrie, indem sie die optische Komplexität reduziert und gleichzeitig eine dynamische Auslesung über mehrere Laser-Wellenlängen sicherstellt. DFMI hat auch das Potenzial absolute Entfernung zu messen, indem die optische Laufzeit in die Modulationstiefe enkodiert wird, was diese Technik attraktiv für Hilfssensoren in Gravitationswellendetektoren und für industrielle Anwendungen macht. Diese Studie untersucht DFMI in einem Michelson-Interferometer zur M

APA, Harvard, Vancouver, ISO, and other styles

34

Zhao, Huining, Wenjing Ding, Mengyao Fan, Haojie Xia, and Liandong Yu. "An optical method based auto-collimation for measuring five degrees of freedom error motions of rotary axis." Review of Scientific Instruments 93, no. 12 (2022): 125110. http://dx.doi.org/10.1063/5.0127199.

Full text

Abstract:

The paper presents an optical method based on auto-collimation to simultaneously measure five degrees of freedom error motions of the rotary axis. The proposed method consists of the collimated lasers, beam splitters, focusing lens, quadrant photodiode detectors, a high-precision steel ball, and a special mirror fixed to the rotary axis. The mathematical model is established byoptical ray tracing, and the corresponding optical path is also simulated by OpticStudio. Meanwhile, an adjusting mechanism for X–Y micro-displacement, based on the elastic deformation of the material, is designed to adj

APA, Harvard, Vancouver, ISO, and other styles

35

Nguyen Thi, Bao My, Van Sy Nguyen, Van Tien Vu, et al. "Equipment for measuring the characteristics of X-ray." Nuclear Science and Technology 6, no. 2 (2021): 39–46. http://dx.doi.org/10.53747/jnst.v6i2.155.

Full text

Abstract:

X-ray measurement equipment is designed which utilizes a pair of photodiode detectors. The equipment is designed which utilizes a pair of photodiode detectors units which receive X-rays through filters with different attenuation coefficients for X-rays. The photodiode detector units preferably includes two pairs of photodiode detectors arranged symmetrically in four quadrants with the diodes in each detector unit in diagonally opposite quadrants. The outputs of the detector units are passed to variable gain amplifiers, gains of which are adjusted to bring the output voltages within a desired r

APA, Harvard, Vancouver, ISO, and other styles

36

Aparicio-Esteve, Elena, Jesús Ureña, Álvaro Hernández, Daniel Pizarro, and David Moltó. "Using Perspective-n-Point Algorithms for a Local Positioning System Based on LEDs and a QADA Receiver." Sensors 21, no. 19 (2021): 6537. http://dx.doi.org/10.3390/s21196537.

Full text

Abstract:

The research interest on location-based services has increased during the last years ever since 3D centimetre accuracy inside intelligent environments could be confronted with. This work proposes an indoor local positioning system based on LED lighting, transmitted from a set of beacons to a receiver. The receiver is based on a quadrant photodiode angular diversity aperture (QADA) plus an aperture placed over it. This configuration can be modelled as a perspective camera, where the image position of the transmitters can be used to recover the receiver’s 3D pose. This process is known as the pe

APA, Harvard, Vancouver, ISO, and other styles

37

Kukurudziak, Mykola S. "Effect of Structural Defects on Parameters of Silicon Four-Quadrant p-i-n Photodiodes." East European Journal of Physics, no. 2 (June 1, 2024): 345–52. http://dx.doi.org/10.26565/2312-4334-2024-2-41.

Full text

Abstract:

The article examines the influence of structural defects, in particular dislocations, on the electrical and photovoltaic properties of silicon four-quadrant p-i-n photodiodes. It was established that growth defects and defects formed during mechanical processing of plates can cross the entire substrate and deteriorate the parameters of photodiodes. This phenomenon is particularly negative due to the placement of defects in the space charge region. In this case, due to the presence of recombination centers in the space charge region, the life time of minor charge carriers decreases and the dark

APA, Harvard, Vancouver, ISO, and other styles

38

Shen, Shengqiang, Jose Miguel Menéndez Sánchez, Shiyin Li, and Heidi Steendam. "Pose Estimation for Visible Light Systems Using a Quadrature Angular Diversity Aperture Receiver." Sensors 22, no. 14 (2022): 5073. http://dx.doi.org/10.3390/s22145073.

Full text

Abstract:

The quadrature angular diversity aperture (QADA) receiver, consisting of a quadrant photodiode (QPD) and an aperture placed above the QPD, has been investigated for pose estimation for visible light systems. Current work on pose estimation for the QADA receiver uses classical camera sensor algorithms well known in computer vision. To this end, however, the light spot center first has to be obtained based on the RSS. However, this is less straightforward than for camera sensors, as in contrast to such sensors where the relationships are linear, the RSS output from the QADA is a non-linear funct

APA, Harvard, Vancouver, ISO, and other styles

39

Panduputra, Yohannes, Tuck Wah Ng, Adrian Neild, and Michael Robinson. "Intensity influence on Gaussian beam laser based measurements using quadrant photodiodes." Applied Optics 49, no. 19 (2010): 3669. http://dx.doi.org/10.1364/ao.49.003669.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Klochkova, Valentina, Julia Sheldakova, Ilya Galaktionov, et al. "Local Correction of the Light Position Implemented on an FPGA Platform for a 6 Meter Telescope." Photonics 9, no. 5 (2022): 322. http://dx.doi.org/10.3390/photonics9050322.

Full text

Abstract:

The low-frequency component of the distortions caused by both the atmospheric turbulence and the behavior of the telescope itself has been studied. A corrector for the position of the center of the star image has been developed and is being used in front of the high-resolution Echelle spectrograph on the 6 m telescope of the Special Astrophysical Observatory, Russian Academy of Sciences. To speed up the calculations and to increase the bandwidth, a laser beam angular stabilization system based on an FPGA platform is considered. The system consists of two tip-tilt mirrors and two quadrant photo

APA, Harvard, Vancouver, ISO, and other styles

41

de Celis, Raul, and Luis Cadarso. "Spot-Centroid Determination Algorithms in Semiactive Laser Photodiodes for Artillery Applications." Journal of Sensors 2019 (January 27, 2019): 1–12. http://dx.doi.org/10.1155/2019/7938415.

Full text

Abstract:

Precision of guided projectiles depends equally on the accuracy in determining the coordinates of the objective and on the exactness of the measurement devices utilized for position and attitude calculation of the projectile. Development of algorithms for low-cost high-precision terminal guidance systems is a cornerstone in research in this field. Semiactive laser (SAL) kits, and particularly quadrant detector devices, have been developed to improve precision in guided weapons. Photodetection system can be functionally divided into two main parts: sensing and processing. The sensed signal is p

APA, Harvard, Vancouver, ISO, and other styles

42

Sawano, Hiroshi, Motohiro Takahashi, Hayato Yoshioka, Hidenori Shinno, and Kimiyuki Mitsui. "On-Machine Optical Surface Profile Measuring System for Nano-Machining." International Journal of Automation Technology 5, no. 3 (2011): 369–76. http://dx.doi.org/10.20965/ijat.2011.p0369.

Full text

Abstract:

There has been an increasing demand for machining of precision parts recently. In order to meet such requirements, nano-machining systems with on-machine surface profile measuring function are required. This paper presents a newly developed on-machine shape measuring system with an optical probe. In this system, an astigmatic focus error detection method is applied to the optical probe. In addition, the influence of the uneven reflection from the surface can be reduced by using two quadrant photodiodes. The results of surface profile measurement confirm that the system developed provides a res

APA, Harvard, Vancouver, ISO, and other styles

43

Appourchaux, T. "Frequencies and splittings of low-degree solar p modes: Results of the Luminosity Oscillations Imager." Highlights of Astronomy 10 (1995): 336–37. http://dx.doi.org/10.1017/s1539299600011448.

Full text

Abstract:

The design of the LOI instrument was an original idea of Andersen et al. (1988). It consists of a Ritchey-Chrétien telescope (f=1300 mm) imaging the Sun through an 5-nm passband interference filter at 500 nm. The image is projected on a photodiode array detector built to our specifications (Appourchaux et al., 1992). The detector is made out of 12 scientific pixels and of 4 guiding pixels. The shape of the scientific pixels are trimmed to detect low degree modes for l < 7 (Appourchaux and Andersen, 1990). The guiding pixels are 4 quadrants of an annulus with an inner and outer radius of 0.9

APA, Harvard, Vancouver, ISO, and other styles

44

Keister, Jeffrey W., Levent Cibik, Swenja Schreiber, and Michael Krumrey. "Characterization of a quadrant diamond transmission X-ray detector including a precise determination of the mean electron–hole pair creation energy." Journal of Synchrotron Radiation 25, no. 2 (2018): 407–12. http://dx.doi.org/10.1107/s1600577517017659.

Full text

Abstract:

Precise monitoring of the incoming photon flux is crucial for many experiments using synchrotron radiation. For photon energies above a few keV, thin semiconductor photodiodes can be operated in transmission for this purpose. Diamond is a particularly attractive material as a result of its low absorption. The responsivity of a state-of-the art diamond quadrant transmission detector has been determined, with relative uncertainties below 1% by direct calibration against an electrical substitution radiometer. From these data and the measured transmittance, the thickness of the involved layers as

APA, Harvard, Vancouver, ISO, and other styles

45

Cincotta, Stefanie, Cuiwei He, Adrian Neild, and Jean Armstrong. "Indoor Visible Light Positioning: Overcoming the Practical Limitations of the Quadrant Angular Diversity Aperture Receiver (QADA) by Using the Two-Stage QADA-Plus Receiver." Sensors 19, no. 4 (2019): 956. http://dx.doi.org/10.3390/s19040956.

Full text

Abstract:

Visible light positioning (VLP), using LED luminaires as beacons, is a promising solution to the growing demand for accurate indoor positioning. In this paper, we introduce a two-stage receiver that has been specifically designed for VLP. This receiver exploits the advantages of two different VLP receiver types: photodiodes and imaging sensors. In this new receiver design a quadrant angular diversity aperture (QADA) receiver is combined with an off-the-shelf camera to form a robust new receiver called QADA-plus. Results are presented for QADA that show the impact of noise and luminaire geometr

APA, Harvard, Vancouver, ISO, and other styles

46

Rafí, J. M., G. Pellegrini, P. Godignon, et al. "Four-quadrant silicon and silicon carbide photodiodes for beam position monitor applications: electrical characterization and electron irradiation effects." Journal of Instrumentation 13, no. 01 (2018): C01045. http://dx.doi.org/10.1088/1748-0221/13/01/c01045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Rafí, J. M., G. Pellegrini, D. Quirion та ін. "10 μ m-thick four-quadrant transmissive silicon photodiodes for beam position monitor application: electrical characterization and gamma irradiation effects". Journal of Instrumentation 12, № 01 (2017): C01004. http://dx.doi.org/10.1088/1748-0221/12/01/c01004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Kholaif, Sobhy, Cesar Jauregui, Yiming Tu, and Jens Limpert. "Characterization of Transverse Mode Instability with a 4-Quadrant Photodiode." Optics Express, January 25, 2023. http://dx.doi.org/10.1364/oe.478961.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Magaña-Sandoval, Fabian, Thomas Vo, Daniel Vander-Hyde, J. R. Sanders, and Stefan W. Ballmer. "Sensing optical cavity mismatch with a mode-converter and quadrant photodiode." Physical Review D 100, no. 10 (2019). http://dx.doi.org/10.1103/physrevd.100.102001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Lu, Bing‐Yuh. "ANFIS‐based controlled spherical rotator with quadrant photodiode to improve position detection accuracy." IET Optoelectronics, October 4, 2024. http://dx.doi.org/10.1049/ote2.12127.

Full text

Abstract:

AbstractThe authors aim to build a theoretical system for calibrating the position detection of a single quadrant photodiode (QPD) attached to 2D rotators and to suppress noise using a Sugeno‐type fuzzy inference system. According to the results, if the original ANFIS network (NWo) is trained under the conditions of resolution (rso), traing samples (No), and the possibility of random noise (po) and presented as {original, rso, No, po}, with the #X testing case presented as {case #X, rsx, Nx, px}, case #X is expected to be the all‐pass case of the two root‐mean‐squared error criteria under the

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!