Relevant bibliographies by topics / Effects of atomic coherence on light propagation

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  2. Dissertations / Theses
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Academic literature on the topic 'Effects of atomic coherence on light propagation'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Effects of atomic coherence on light propagation"

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Wu, Zengyan, Zhejun Feng, Shubing Ye, Baoming Song, Runxi Wei, and Chaoran Yu. "Beam Properties of a Partially Coherent Beam Propagating Horizontally in Atmospheric Turbulence." Photonics 10, no. 4 (2023): 477. http://dx.doi.org/10.3390/photonics10040477.

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This study explored the impact of atmospheric turbulence on partially coherent light propagation. Atmospheric turbulence causes random modulation of the intensity and phase of light, resulting in a speckle pattern in the far field. This study focused on partially coherent Gaussian Schell model beams and derived an analytical expression of the cross-spectral density function for their transmission through atmospheric turbulence, based on the generalized Huygens–Fresnel principle and the Tatarski spectrum model. Numerical simulations were used to investigate the effects of the source parameters
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Wang, Jiao, Mingjun Wang, Sichen Lei, Zhenkun Tan, Chenbai Wang, and Yuanfei Wang. "Influence of Source Parameters and Non-Kolmogorov Turbulence on Evolution Properties of Radial Phased-Locked Partially Coherent Vortex Beam Array." Photonics 8, no. 11 (2021): 512. http://dx.doi.org/10.3390/photonics8110512.

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Partially coherent optical vortices have been applicated widely to reduce the influence of atmospheric turbulence, especially for free-space optical (FSO) communication. Furthermore, the beam array is an effective way to increase the power of the light source, and can increase the propagation distance of the FSO communication system. Herein, we innovatively report evolution properties of the radial phased-locked partially coherent vortex (RPLPCV) beam array in non-Kolmogorov turbulence. The analytical expressions for the cross-spectral density and the average intensity of an RPLPCV beam array
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Distante, Emanuele, Auxiliadora Padrón-Brito, Matteo Cristiani, David Paredes-Barato, and Riedmatten Hugues de. "Storage Enhanced Nonlinearities in a Cold Atomic Rydberg Ensemble." Physical Review Letters 117 (September 26, 2016): 113001. https://doi.org/10.5281/zenodo.815848.

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The combination of electromagnetically induced transparency with the nonlinear interaction between Rydberg atoms provides an effective interaction between photons. In this Letter, we investigate the storage of optical pulses as collective Rydberg atomic excitations in a cold atomic ensemble. By measuring the dynamics of the stored Rydberg polaritons, we experimentally demonstrate that storing a probe pulse as Rydberg polaritons strongly enhances the Rydberg mediated interaction compared to the slow propagation case. We show that the process is characterized by two time scales. At short storage
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BAEV, ALEXANDER, PONTUS WELINDER, ROBERT ERLANDSSON, JOHAN HENRIKSSON, PATRICK NORMAN, and HANS ÅGREN. "A QUANTUM MECHANICAL — ELECTRODYNAMICAL APPROACH TO NONLINEAR PROPERTIES: APPLICATION TO OPTICAL POWER LIMITING WITH PLATINUM-ORGANIC COMPOUNDS." Journal of Nonlinear Optical Physics & Materials 16, no. 02 (2007): 157–69. http://dx.doi.org/10.1142/s0218863507003652.

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Light propagation in a medium is sensitively dependent on the shape and intensity of the optical pulse as well as on the electronic and vibrational structure of the basic molecular units. We review in this paper the results of systematic studies of this problem for isotropic media. Our theoretical approach—the quantum mechanical–electrodynamical (QMED) approach—is based on a quantum mechanical account of the many-level electron-nuclear medium coupled to a numerical solution of the density matrix and Maxwell's equations. This allows us to accommodate a variety of nonlinear effects which accompl
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Pilehvar, Elnaz, Ehsan Amooghorban, and Mohammad Kazem Moravvej-Farshi. "Quantum optical analysis of squeezed state of light through dispersive non-Hermitian optical bilayers." Journal of Optics 24, no. 2 (2022): 025201. http://dx.doi.org/10.1088/2040-8986/ac461c.

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Abstract We investigate the propagation of a normally incident squeezed coherent state of light through dispersive non-Hermitian optical bilayers, particularly at a frequency that the bilayers hold parity-time (𝒫𝒯) symmetry. To check the realization of 𝒫𝒯-symmetry in quantum optics, we reveal how dispersion and loss/gain-induced noises and thermal effects in such bilayers can affect quantum features of the incident light, such as squeezing and sub-Poissonian statistics. The numerical results show thermally induced noise at room temperature has an insignificant effect on the propagation propert
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Xu, ShiJun, and XiaoKang Li. "Refractive index characteristics of edible oils based on spectrometry and effects of oil dispersion on OCT." Journal of Innovative Optical Health Sciences 14, no. 01 (2021): 2140010. http://dx.doi.org/10.1142/s1793545821400101.

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It is necessary to investigate the wavelength-dependent variation rules of the refractive index of edible oils so as to explore the specificity of the dispersion in light propagation, imaging, and interference processes among different types of edible oil products. In this study, by deriving the refractive index equations of the double glass sheet holding device and oil, the reflectance spectra of three different types of oil samples, namely, peanut oil, colza oil, and kitchen waste oil, were measured via a spectrometer. Furthermore, the refractive index model of these different types of oil s
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Razi, Ebrahim Mohammadi, and Saifollah Rasouli. "Effects of temperature gradient and beam path height from heat source on phase structure and mutual coherence functions of a light beam propagating through convective air turbulence." Optics & Laser Technology 161 (June 2023): 109174. http://dx.doi.org/10.1016/j.optlastec.2023.109174.

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He, Huijuan, Zhengfeng Hu, Yuzhu Wang, Ligang Wang, and Shiyao Zhu. "Superluminal light propagation assisted by Zeeman coherence." Optics Letters 31, no. 16 (2006): 2486. http://dx.doi.org/10.1364/ol.31.002486.

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Carusotto, I., M. Artoni, and G. C. La Rocca. "Atomic recoil effects in slow light propagation." Journal of Experimental and Theoretical Physics Letters 72, no. 6 (2000): 289–93. http://dx.doi.org/10.1134/1.1328439.

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Chiao, R. Y. "Atomic coherence effects which produce superluminal (but causal) propagation of wavepackets." Quantum Optics: Journal of the European Optical Society Part B 6, no. 4 (1994): 359–69. http://dx.doi.org/10.1088/0954-8998/6/4/013.

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Dissertations / Theses on the topic "Effects of atomic coherence on light propagation"

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Singh, Pooja. "Quantum Coherent Control and Propagation in Lambda System." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849750/.

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Strong coherence in quasi-resonant laser driven system interferes with effective relaxations, resulting in behaviors like, coherent population trapping and Electromagnetically induced transparency. The Raman system can optimize this utilizing excited coherence in the lambda system when exposed to counter- intuitive pump-stokes pulses. The phenomenon can result in complete population transfer between vibrational levels called Stimulated Raman adiabatic passage(STIRAP). STIRAP and CHIRAP have been studied with Gaussian and chirped pulses. The optical propagation effects in dense medium for these
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Book chapters on the topic "Effects of atomic coherence on light propagation"

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Agarwal, G. S., and R. R. Puri. "Quantum Effects in Light Propagation through a Nonlinear Medium." In Coherence and Quantum Optics VI. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0847-8_4.

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Benkhelil, Hilal. "Effects of gravitational waves on two-level atom moving in a quantized traveling light field: exact solution via path integral." In Gravitational Waves - Theory and Observations. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1001047.

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We adopt a coherent states path integral formalism to study the system of a two-level atom moving in a quantized traveling light field and a gravitational field. By using the phase space and some rotations in the space of coherent states, have enabled greatly simplify the calculations. The propagator is first written in a standard form, ∫Dpathexpi/ℏSpath, by replacing the spin with a unit vector aligned along the polar and azimuthal directions. Then, it is determined exactly due to the auxiliary equation which has a spacial function as a solution. The corresponding wave functions have been ded
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L’Huillier, Anne. "Generation of high-order harmonics and attosecond pulses." In Current Trends in Atomic Physics. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198837190.003.0008.

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The interaction of atoms with intense laser radiation leads to the generation of high-order harmonics of the laser field. In the time domain, this corresponds to a train of pulses in the extreme ultraviolet range and with attosecond duration. The first section introduces the physics of high-order harmonic generation and attosecond pulses on the single atom level while the second section discusses phase matching and propagation effects. The attosecond time scale is that of the electron motion in atoms and molecules. Attosecond light pulses are used to study, for example, the dynamics of atomic
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Woźniak S. "Optically induced static magnetization due to molecular reorientational processes in dc electric field." In Atomic and Molecular Nonlinear Optics: Theory, Experiment and Computation. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-742-0-484.

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The molecular theory of optically induced static magnetization is extended to systems acted on with a dc electric field. The two effects, the invers Faraday effect and invers magnetochiral birefringence, are analysed for their dependence on an electric field perpendicular or parallel to the propagation direction of the incident light beam. The mechanisms responsible for the effects are described in terms of linear and nonlinear multipole polarizability tensors as well as molecular reorientation functions defined by the generalized Langevin-Kielich functions. The effects at electric saturation
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Letokhov, Vladilen. "Optical orientation of atoms and nuclei." In Laser Control of Atoms and Molecules. Oxford University PressOxford, 2007. http://dx.doi.org/10.1093/oso/9780198528166.003.0004.

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Abstract A century ago Einstein introduced the notion of the linear momentum of a photon, h k, and analyzed its transfer to an atom (and back) in the establishment of thermodynamic equilibrium between black-body radiation and matter. In addition to a linear momentum, the photon also possesses an angular momentum, ħ, directed parallel (or antiparallel) to its propagation direction (the OZ axis in Fig. 4.1), depending on its polarization direction (left- or right-handed). This angular momentum is due to the spin of the photon, equal to 1. Half a century later, Kastler (1950) considered the use o
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Conference papers on the topic "Effects of atomic coherence on light propagation"

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Korociński, J., A. Raczyński, J. Zaremba, and S. Zielińska-Kaniasty. "Interference effects in light propagation in a three-level atomic medium in the loop configuration." In SPIE Optics + Optoelectronics, edited by Ivan Prochazka and Jaromír Fiurásek. SPIE, 2011. http://dx.doi.org/10.1117/12.886952.

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Shkolnikov, P. L., and A. E. Kaplan. "On the feasibility of X-ray nonlinear resonant effects in plasma." In Short Wavelength Coherent Radiation: Generation and Applications. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/swcr.1991.wa7.

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Recent developments in x-ray laser research resulted in the experimental observation of laser amplification at many wavelengths in soft x-ray domain [1] ranging from λ = 280 Å to λ = 42 Å. There is no doubts that within next few years powerful sources of coherent x-ray laser radiation at those wavelengths will also be available. This sets a stage for the research on the interaction of intense coherent x-ray radiation with a matter, in particular on x-ray nonlinear optics. The first obvious choice of the environment and frequency for the nonlinear effects to occur and to be experimentally obser
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Li, Xingfu, G. G. Padmabandu, Ching Wang, Edward S. Fry, and Marian O. Scully. "Lasing without inversion through population trapping in the sodium D1 line." In OSA Annual Meeting. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.tha.4.

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Atomic coherence effects are shown to lead to the suppression of optical pumping, to the switching of light on and off when the coherence effects are turned on and off, and especially to lasing without inversion.
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Conceição, Carlos Eduardo A., and Thonimar V. Alencar. "Analysis of Structured Light Beam Propagation in Turbulent Free Space." In Frontiers in Optics. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/fio.2023.jm7a.46.

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Understanding the impact of atmospheric turbulence on optical beam propagation is vital for the analysis and optimization of free-space optical communication systems. Recent proposals have indicated the potential of structured light beams to sustain coherence even in turbulent channels. In this study, we employ the split-step Fourier method as a modeling technique to simulate the propagation of structured light beams in turbulent free space. By investigating the behavior of structured light under these conditions, we aim to uncover valuable insights and strategies for mitigating the disruptive
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Wilkinson, Steven R., and Arlee V. Smith. "Computer modeling of lasing without inversion in atomic samarium." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.tujj6.

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Remarkable effects are predicted in a coherently prepared atomic medium. These include gain without inversion and high index of refraction with zero absorption.1 Atomic samarium in a magnetic field is an attractive system for the experimental realization of these effects. We have modeled the behavior of this system for a strong, coherence-inducing pump and a weak probe. We calculate probe eigenpolarizations and the associated susceptibilities as a function of probe frequency using realistic values for oscillator strengths, damping rates, and number density but not including Doppler broadening.
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Kono, Junichiro. "Ultrastrong Light-Matter Coupling in a High-Q Terahertz Cavity." In JSAP-OSA Joint Symposia. Optica Publishing Group, 2017. http://dx.doi.org/10.1364/jsap.2017.7a_a409_1.

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Strong resonant light-matter coupling in a cavity setting is an essential ingredient in fundamental cavity quantum electrodynamics (QED) studies as well as in cavity-QED-based quantum information processing. In particular, a variety of solid-state cavity QED systems have recently been examined, not only for the purpose of developing scalable quantum technologies, but also for exploring novel many-body effects inherent to condensed matter. For example, collective N1/2-fold enhancement of light-matter coupling in an N-body system, combined with colossal dipole moments available in solids, compar
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Scully, M. O., E. S. Fry, X. Li, G. G. Padmabandu, C. Su, and S. Y. Zhu. "Experimental observation of lasing without inversion in Na." In OSA Annual Meeting. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.tha.1.

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Atomic coherence gives rise to a series of interesting phenomena in quantum optics.1 In this work we investigate coherence effects within the Na Dl line, demonstrating coherent trapping and lasing without inversion, and study the dependence of these phenomena on buffer gas pressure. Two pump laser beams (I, and I2) are tuned to the frequencies υ1 and υ2 that correspond to the 3S1/2 (F=1, 2) → 3P1/2 transition and are right circularly polarized. Pockels cells are used to turn on or/and off the beams within approximately one nanosecond. To demonstrate lasing without inversion, a weak pulse of le
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Churnside, James H., and Richard J. Lataitis. "Scintillation of light at two colors." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.wk1.

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Simultaneous measurements were made of the scintillations of red and blue light in the atmosphere. The sources were a He-Ne laser at 633 nm and a He-Cd laser at 422 nm. Several horizontal propagation paths were used, and the strength of turbulence and its inner scale were recorded during the experiments. Weak path-integrated turbulence theory predicts a very high correlation between the scintillations at these two wavelengths. We observed that the correlations were lower than this prediction in strong path-integrated turbulence. The weak turbulence theory consists of a double integral that sum
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Gamliel, Avshalom, and Govind P. Agrawal. "Correlation-induced spectral changes in homogeneous and inhomogeneous media." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tuv5.

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It was recently shown that the spectrum of partially coherent light can change on propagation.1 So far most of the work has applied to propagation in free space and has been limited to far-zone observation points. In this paper we consider the propagation of partially coherent light through homogeneous and inhomogeneous media. Our formulation is based on the analysis of Agrawal et al.,2 which applies to graded-index fibers whose index of refraction changes quadratically as a function of the radial distance from the core center. With this formulation we derive expressions by using the paraxial
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Rosenberger, A. T. "Bifurcations and chaos in pulse-train superradiance." In OSA Annual Meeting. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.we7.

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The superradiant response of a collection of three-level atoms to a train of pump pulses has been investigated numerically. It is assumed that the size of the system is small enough that propagation may be neglected and that the pump is resonant. The atoms are considered to be homogeneously broadened, and all relaxation rates are taken to be equal. The period of the pump pulse train is of the order of the atomic relaxation time, and the width of individual pulses is <4% of the period. Coherence remaining from previous pulses results in qualitative changes in the superradiant pulse train as
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Reports on the topic "Effects of atomic coherence on light propagation"

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Wolf, Emil. Coherence Effects in Light Propagation in Scattering and in Spectroscopy. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada442639.

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