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Acta Physica Sinica

EXCITED DEGENERATE FOUR-WAVE MIXING

Yanqiang Yang, Haosheng Fei, Zhenqian Wei, Sun Gui-juan, 吉林大学物理系,长春130023

Published Jan 1, 1996• 0 citations
Publisher

Abstract

Excited state degenerate four-wave mixing in a four-level saturable system is treated theoretically and experimentally. The results show that the external pump feild influences intensely the intensities of the PC signals.
DOI
10.7498/aps.45.210

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Transient phase conjugation by degenerate four-wave mixing in saturable dyes is investigated theoretically and experimentally. Two special cases are examined: (1) the case in which two pump waves and a probe wave are simultaneously turned on and (2) the case in which the pump waves are turned on well before the incidence of the probe wave. For case (1) a peak appears in the transient reflectivity for high pump intensity, while for case (2) the reflectivity increases monotonically with time up to the steady-state value irrespective of the value of the pump intensity.