A temporal behavior of a phase conjugation reflectivity R at degenerate four-wave mixing (DFWM) in InSb for a pulsed carbon-dioxide laser radiation is theoretically investigated. It is shown, that R at a transient DFWM is determined by a response time of a nonlinear medium, which depends on intensity of a radiation, and can be some times higher than a reflectivity for non-transient condition.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEApr 4, 19970 citations

Optical and Quantum Electronics

Transient degenerate four-wave mixing in molecular systems

A. V. Pakhomov, Chung-Jen Wu, Yit‐Tsong Chen, S. H. Lin

Published Oct 1, 1996• 3 citations

Publisher

DOI: 10.1007/bf00326219

Related papers

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

Transient analysis of degenerate four-wave mixing (A)

M. Dagenais

Journal of the Optical Society of America ADec 1, 19820 citations

Transient degenerate four wave mixing in saturable absorbers

Daniel M. Heffernan

Physics Letters AJul 1, 19841 citation

Power dependence of transient degenerate four-wave mixing in molecular systems

A. V. Pakhomov, Chung-Jen Wu, Yit‐Tsong Chen +1 more

The object of this study is to quantitatively elucidate the laser-power dependence in transient degenerate four-wave mixing (DFWM) with an emphasis on the high laser-pump intensity region. We discuss our investigation on the power dependence of transient DFWM by taking gas-phase iodine ( ${\mathrm{I}}_{2}$ ) molecules as a testing example. The distinct physical feature is that in the high-power laser pump, where both laser-pulse duration and the inverse of pump rate are much shorter than the molecular population relaxation time, the steady-state DFWM theory of Abrams and Lind [Optical Phase Conjugation, edited by R. A. Fisher (Academic, New York, 1983), Chap. 8, pp. 211--284; Opt. Lett. 2, 94 (1978); 3, 205 (1978)] is not appropriate. The prediction by the steady-state theory has shown the DFWM to decrease with increasing laser-pump intensity as a function of 1/ ${\mathrm{I}}_{\mathrm{laser}}$ , which disagrees with the saturation behavior observed in the experiment. To elucidate the dependence of DFWM on the laser pump intensity, a non-steady-state extension of the nonperturbative theory of Abrams and Lind is required. The non-steady-state theoretical result will be shown to be in good agreement with the experimental power dependence at resonance transient DFWM especially in the high-power pump region.The object of this study is to quantitatively elucidate the laser-power dependence in transient degenerate four-wave mixing (DFWM) with an emphasis on the high laser-pump intensity region. We discuss our investigation on the power dependence of transient DFWM by taking gas-phase iodine (${\mathrm{I}}_{2}$) molecules as a testing example. The distinct physical feature is that in the high-power laser pump, where both laser-pulse duration and the inverse of pump rate are much shorter than the molecular population relaxation time, the steady-state DFWM theory of Abrams and Lind [Optical Phase Conjugation, edited by R. A. Fisher (Academic, New York, 1983), Chap. 8, pp. 211--284; Opt. Lett. 2, 94 (1978); 3, 205 (1978)] is not appropriate. The prediction by the steady-state theory has shown the DFWM to decrease with increasing laser-pump intensity as a function of 1/${\mathrm{I}}_{\mathrm{laser}}$, which disagrees with the saturation behavior observed in the experiment. To elucidate the dependence of DFWM on the laser pump intensity, a non-steady-state extension of the nonperturbative theory of Abrams and Lind is required. The non-steady-state theoretical result will be shown to be in good agreement with the experimental power dependence at resonance transient DFWM especially in the high-power pump region.

Physical Review AApr 1, 19971 citation

Transient coherent degenerate four-wave mixing

J.T. Chen, Z. X. Yu

A set of coupled equations is derived and used to analyze transient coherent degenerate four-wave mixing (DFWM) in a two-level system. The numerical results show that in the case of near-resonance, intense pumping, and short pulses, the properties of degenerate four-wave mixing have interesting coherent interaction characteristics, such as quasi-periodicity in the pump pulse area, probe pulse areas, and energy reflectivity, oscillatory behavior of the DFWM pulse, and generation of a DFWM signal in the case of delayed incidence, where the three incident pulses do not overlap in the medium.>A set of coupled equations is derived and used to analyze transient coherent degenerate four-wave mixing (DFWM) in a two-level system. The numerical results show that in the case of near-resonance, intense pumping, and short pulses, the properties of degenerate four-wave mixing have interesting coherent interaction characteristics, such as quasi-periodicity in the pump pulse area, probe pulse areas, and energy reflectivity, oscillatory behavior of the DFWM pulse, and generation of a DFWM signal in the case of delayed incidence, where the three incident pulses do not overlap in the medium.>

IEEE Journal of Quantum ElectronicsMar 1, 19893 citations

Transient four-wave mixing of pulsed CO 2 laser radiation in semiconductors

Michail G. Galushkin, Konstantin V. Mitin, А. А. Ионин +1 more

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEApr 4, 19970 citations

{\mathrm{I}}_{2}

) molecules as a testing example. The distinct physical feature is that in the high-power laser pump, where both laser-pulse duration and the inverse of pump rate are much shorter than the molecular population relaxation time, the steady-state DFWM theory of Abrams and Lind [Optical Phase Conjugation, edited by R. A. Fisher (Academic, New York, 1983), Chap. 8, pp. 211--284; Opt. Lett. 2, 94 (1978); 3, 205 (1978)] is not appropriate. The prediction by the steady-state theory has shown the DFWM to decrease with increasing laser-pump intensity as a function of 1/

{\mathrm{I}}_{\mathrm{laser}}

, which disagrees with the saturation behavior observed in the experiment. To elucidate the dependence of DFWM on the laser pump intensity, a non-steady-state extension of the nonperturbative theory of Abrams and Lind is required. The non-steady-state theoretical result will be shown to be in good agreement with the experimental power dependence at resonance transient DFWM especially in the high-power pump region.