Topic
Phase conjugation
About: Phase conjugation is a research topic. Over the lifetime, 3694 publications have been published within this topic receiving 49099 citations.
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TL;DR: In this article, a two-dimensional model for the self-pumped phase conjugation in photorefractive crystals is presented, where the authors numerically study the dependence of the selfpumped conjugations reflectivity and spatial fidelity on the incident angle, the position of the incident beam upon the input face, and the input wavelength.
Abstract: A two-dimensional model for the self-pumped phase conjugation in photorefractive crystals is presented. Numerical simulations of the beam path for beam fanning and the self-pumped phase conjugation within the crystals show good agreement with the experimental observations. We numerically study the dependence of the self-pumped phase conjugation reflectivity and spatial fidelity on the incident angle, the position of the incident beam upon the input face, and the input wavelength, which are in good agreement with the published and our experimental results.
11 citations
TL;DR: It is shown that, in spite of the fact that in general, losses spoil phase conjugation, in the important case of paraxial beam propagation, a z-dependent loss can be tolerated and non linear losses and nonlinear dielectrics are also permitted under some fairly general circumstances.
Abstract: Rigorous and approximate conditions that need to be satisfied by a propagation medium to enable phase conjugation to occur are derived. It is shown that, in spite of the fact that in general, losses spoil phase conjugation, in the important case of paraxial beam propagation (along z), a z-dependent loss can be tolerated. In addition, nonlinear losses (gain) and nonlinear dielectrics are also permitted under some fairly general circumstances.
11 citations
11 Mar 2018
TL;DR: 96-Gbaud PDM-8QAM single carrier long-haul transmission is demonstrated employing polarization-diverse PPLN-based optical phase conjugator which increased the optimal fiber input power by 4dB and extends the transmission distance from 7,040 km to 9,600km.
Abstract: 96-Gbaud PDM-8QAM single carrier long-haul transmission is demonstrated employing polarization-diverse PPLN-based optical phase conjugator which increased the optimal fiber input power by 4dB and extends the transmission distance from 7,040 km to 9,600km.
11 citations
TL;DR: In this paper, an optical triggered switching effect has been observed in backscattering in a new picosecond phase conjugation experiment, which can be explained by the small duration of the pulse.
11 citations
TL;DR: In this paper, an optically pumped degenerate four-wave mixing (DFWM) experiment was conducted to examine the photoreactive phase conjugation (PC) signals.
Abstract: Near-resonant optical pumping was used to modulate third-order susceptibility χ(3) in disperse red 1 doped poly(methylmethacrylate) thin films. An optically pumped degenerate four-wave mixing (DFWM) experiment was conducted to examine the photoreactive phase conjugation (PC) signals. Experimental results indicated a large anisotropy in PC signals arising from ∣χ3333(3)∣2, and almost isotropic PC signals from ∣χ1331(3)∣2 under s-polarized and p-polarized pump fields. Additionally, a dynamic microscopic model, based on the theory developed by Sekkat et al.[Synth. Met. 54, 373 (1993); J. Phys. Chem. B 106, 12407 (2002); Opt. Commun. 229, 291 (2004)] was presented to describe the observed optical nonlinear responses. Results from the model were generally consistent with those of the optically pumped DFWM experiment.
11 citations