Phase-conjugated distortion by degenerate four-wave mixing

Chen, Nandian

doi:10.1016/0030-4018(86)90049-0

Cited by 4 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, using a phase-conjugate beam to correct the beam drift caused by surface wave turbulence has been a viable solution. A phase-conjugate beam of blue-green beam has been efficiently obtained by a degenerate four-wave mixing (DFWM) method, where azo dyes-doped polymer was used as the nonlinear optical (NLO) media [20][21][22][23], thus pave the way for correction of beam distortion under the influence of surface wave turbulence.…”

Section: Introductionmentioning

confidence: 99%

Application of phase-conjugate beams in beam correction and underwater optical wireless communication subject to surface wave turbulence

Yuan

Zhou

et al. 2022

Front. Optoelectron.

View full text Add to dashboard Cite

Water surface wave turbulence is one of the factors affecting the performances of underwater optical wireless communication (UOWC) systems. In our research, a phase-conjugate beam was used to correct the beam distortion and enhance the communication performances when a system is subject to surface wave turbulence. The phase-conjugate beam was generated by a phase-conjugate mirror (PCM), and a turbulence generator was used to generate surface wave turbulence in the experiment. We calculated the beam centroid distribution and the results showed that the phase-conjugate beam had a better propagation performance than the distorted beam at the different water depths. The root mean square (RMS) of the beam centroid for the phase-conjugate beam was 11 times less than that for the distorted beam, which meant that the phase-conjugate beam could effectively correct the beam drift. We further investigated the scintillation index and the signal-to-noise ratio (SNR); the results showed that the phase-conjugate beam was able to reduce the scintillation and an obvious improvement in SNR could be obtained. This research has the potential to be applied in UWC. Graphical Abstract

show abstract

Section: Introductionmentioning

confidence: 99%

Application of phase-conjugate beams in beam correction and underwater optical wireless communication subject to surface wave turbulence

Yuan

Zhou

et al. 2022

Front. Optoelectron.

View full text Add to dashboard Cite

show abstract

“…In particular, degenerate FWM (DFWM) is a superb method to generate a phase-conjugate beam, in which a probe beam intersects two counter-propagating pump beams, and the DFWM signal is generated in the opposite direction of the probe beam. Because the DFWM signal is the phase-conjugate beam of the input probe beam, it can be used to eliminate the distortion as the probe beam passes through an inhomogeneous phasedistorting medium [21,22]. So far, DFWM has been widely used in adaptive optics, laser communication, and so on.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the phase conjugation degenerate four-wave mixing using the Bessel beam

Zhang

Cheng

Ren

et al. 2018

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF)

View full text Add to dashboard Cite

We report on the enhancement of phase conjugation degenerate four-wave mixing (DFWM) in hot atomic Rb vapor by using a Bessel beam as the probe beam. The Bessel beam was generated using cross-phase modulation based on the thermal nonlinear optical effect. Our results demonstrated that the DFWM signal generated by the Bessel beam is about twice as large as that generated by the Gaussian beam, which can be attributed to the extended depth and tight focusing features of the Bessel beam. We also found that a DFWM signal with reasonable intensity can be detected even when the Bessel beam encounters an obstruction on its way, thanks to the selfhealing property of the Bessel beam. This work not only indicates that DFWM using a Bessel beam would be of great potential in the fields of high-fidelity communication, adaptive optics, and so on, but also suggests that a Bessel beam would be of significance to enhance the nonlinear process, especially in thick and scattering media.

show abstract

Experimental study on compensation of beam distortion caused by turbulence using a phase conjugate beam

Yuan

2021

Journal of Modern Optics

View full text Add to dashboard Cite

Phase-conjugated distortion by degenerate four-wave mixing

Cited by 4 publications

References 3 publications

Application of phase-conjugate beams in beam correction and underwater optical wireless communication subject to surface wave turbulence

Application of phase-conjugate beams in beam correction and underwater optical wireless communication subject to surface wave turbulence

Enhancement of the phase conjugation degenerate four-wave mixing using the Bessel beam

Experimental study on compensation of beam distortion caused by turbulence using a phase conjugate beam

Contact Info

Product

Resources

About