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Degenerate four-wave mixing in Kerr media in the presence of nonlinear refraction, pump depletion and linear absorption

Shekhar Guha, Philip W. Conner

Optics CommunicationsApr 1, 19922 citations

Studies of degenerate four-wave mixing in atomic and molecular systems (A)

Richard C. Lind, Duncan G. Steel, Juan Francisco Lam +2 more

Journal of the Optical Society of America AJun 1, 19805 citations

Crossed-beam optically degenerate wave mixing with bosonic quantum gases

Chengjie Zhu, Yan Li, L. Deng

Highly efficient, optical-degenerate wave-mixing involving bosonic quantum gas is studied using a crossed-beam geometry. We show a very large enhancement due to nonlinear gain from a matter-optical wave-mixing process involving four photons and two matter-wave excitations. Under suitable conditions with a red-detuned pump field this optically degenerate, four-photon process can be stronger than the traditional two-photon inelastic light-scattering mechanism, leading to strong nonlinear growth of the observed matter-wave scattering. This optically degenerate four-wave mixing is independent of other enhancements arising from bosonic stimulations. More importantly, this highly efficient, backward degenerate wave generation and growth process does not have a correspondence in thermal gases in nonlinear optics.Highly efficient, optical-degenerate wave-mixing involving bosonic quantum gas is studied using a crossed-beam geometry. We show a very large enhancement due to nonlinear gain from a matter-optical wave-mixing process involving four photons and two matter-wave excitations. Under suitable conditions with a red-detuned pump field this optically degenerate, four-photon process can be stronger than the traditional two-photon inelastic light-scattering mechanism, leading to strong nonlinear growth of the observed matter-wave scattering. This optically degenerate four-wave mixing is independent of other enhancements arising from bosonic stimulations. More importantly, this highly efficient, backward degenerate wave generation and growth process does not have a correspondence in thermal gases in nonlinear optics.

Physical Review AMar 8, 20190 citations

Optical Pumping in Four-Wave Mixing.

Geoffrey L. Rogers

Jan 1, 19920 citations

Detuning characteristics and conversion efficiency of nearly degenerate four-wave mixing in a 1.5- mu m traveling-wave semiconductor laser amplifier

T. Mukai, Tadashi Saitoh

The optical nonlinearity in a semiconductor laser gain medium is investigated through copropagating nearly degenerate four-wave mixing (NDFWM) in a 1.5- mu m InGaAsP traveling-wave laser amplifier (TWA). The FWM signal output powers vary symmetrically with the sign of probe detuning with respect to the pump frequency, while the pump and probe output powers vary asymmetrically. The NDFWM conversion efficiency from the probe input to the FWM signal output is a maximum of 8.3 dB around zero detuning and has positive gain in the range of +or-6 GHz. This demonstrates highly efficient nonlinear interaction due to both large optical gain and large third-order susceptibility. The NDFWM efficiency is also investigated in connection with the TWA gain saturation characteristics and is found to be a maximum for operation around the saturation intensity of the TWA.>The optical nonlinearity in a semiconductor laser gain medium is investigated through copropagating nearly degenerate four-wave mixing (NDFWM) in a 1.5- mu m InGaAsP traveling-wave laser amplifier (TWA). The FWM signal output powers vary symmetrically with the sign of probe detuning with respect to the pump frequency, while the pump and probe output powers vary asymmetrically. The NDFWM conversion efficiency from the probe input to the FWM signal output is a maximum of 8.3 dB around zero detuning and has positive gain in the range of +or-6 GHz. This demonstrates highly efficient nonlinear interaction due to both large optical gain and large third-order susceptibility. The NDFWM efficiency is also investigated in connection with the TWA gain saturation characteristics and is found to be a maximum for operation around the saturation intensity of the TWA.>

IEEE Journal of Quantum ElectronicsMay 1, 199081 citations

Self-Oscillation Induced By Transverse Optical Zeeman Pumping In Degenerate Four-Wave Mixing

C. Schmidt-Iglesias, Gaspar T. Orriols, Francese Pi

It is shown that very high phase-conjugation efficiency and oscillation is attainable in the saturation regime of resonant degenerate four-wave mixing in Doppler-broadened gas media using transverse optical Zeeman pumping of the ground state as nonlinear mechanism. Our theoretical study predicts also the absence of frequency splitting in the saturated line shape of the vectorially phase-conjugate reflectivity of optically thin media.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEJul 10, 19871 citation

Optical hyperfine pumping as nonlinear mechanism in degenerate four-wave mixing

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