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, the authors review the history and nature of stimulated scattering of optical beams and of the large phase-conjugate component often observed in stimulated backscattering, whether it be of Raman, Brillouin, Rayleigh, or other origin.
Abstract: We review the history and nature of stimulated scattering of optical beams and of the large phase-conjugate component often observed in stimulated backscattering, whether it be of Raman, Brillouin, Rayleigh, or other origin. We review the theory of the magnitude of the phase-conjugate component in stimulated backscattering of waves in a multimode optical guide (the usual experimental configuration) or in free focus. Wide applicability of stimulated backscattering for optical phase conjugation is found.
21 citations
TL;DR: In this article, the latest results of experimental and theoretical research into phase conjugation of nonlinear ultrasonic beams are generalized, and prospects for the development of non-linear ultrasound imaging are outlined.
Abstract: The latest results of experimental and theoretical research into phase conjugation of nonlinear ultrasonic beams are generalized, and prospects for the development of nonlinear ultrasonic imaging are outlined.
21 citations
TL;DR: It is demonstrated that ideal compensation of nonlinear noise could result in an increase in the signal-to-noise ratio of 50%, and that reaches may be more than doubled for higher order modulation formats.
Abstract: Compensation of the detrimental impacts of nonlinearity on long-haul wavelength division multiplexed system performance is discussed, and the difference between transmitter, receiver, and in-line compensation analyzed. We demonstrate that ideal compensation of nonlinear noise could result in an increase in the signal-to-noise ratio (measured in dB) of 50%, and that reaches may be more than doubled for higher order modulation formats. The influence of parametric noise amplification is discussed in detail, showing how increased numbers of optical phase conjugators may further increase the received signal-to-noise ratio. Finally, the impact of practical real world system imperfections, such as polarization mode dispersion, are outlined.
21 citations
TL;DR: In this article, complete Raman spectra of transparent media are obtained with a single 10nsec, 10mJ, laser pulse by a new spectroscopic technique which exploits resonant behavior of nondegenerate four-wave mixing in the phase-conjugate geometry.
Abstract: Complete Raman spectra of transparent media are obtained with a single 10-nsec, 10-mJ, laser pulse by a new spectroscopic technique which exploits resonant behavior of nondegenerate four-wave mixing in the phase-conjugate geometry.
21 citations
TL;DR: An experimental study of Brillouin two-beam coupling in CS2 at 1.06 μm in the regime below the pump’s stimulated BrillouIn scattering threshold, finding no competitive self-SBS of the pump was observed despite operation near the SBS threshold.
Abstract: We report an experimental study of Brillouin two-beam coupling in CS2 at 1.06 μm in the regime below the pump’s stimulated Brillouin scattering (SBS) threshold. Angular discrimination between the pump and signal beams is employed. No competitive self-SBS (phase conjugation) of the pump was observed despite operation near the SBS threshold. Image intensification by a factor of 300 is demonstrated with this configuration.
21 citations