Zhang Xiqing, Huang Shihua. MEASURING ULTRAFAST PROCESSES USING TIME DELAYED FOUR WAVE MIXING IN PHASE CONJUGATION CONFIGURATION WITH INCOHERENT LIGHT FROM TWO SOURCES[J]. Chinese Journal of Luminescence, 1993,14(3): 225-230
Zhang Xiqing, Huang Shihua. MEASURING ULTRAFAST PROCESSES USING TIME DELAYED FOUR WAVE MIXING IN PHASE CONJUGATION CONFIGURATION WITH INCOHERENT LIGHT FROM TWO SOURCES[J]. Chinese Journal of Luminescence, 1993,14(3): 225-230DOI:
In ordinary time delayed four wave mixing with incoherent light
the forward
backward pump and probe beams are from one source. In phase conjugation configuration
signal
I
s
(τ) is from two dynamic gratings formed by interference of probe beam with forward or backward pump beams respectively. The complicity of the relation betwean
I
s
(τ) and dephasing and depopulation times makes fitting error large.We propose in this paper a two source method
where backward pump beam is from a source independent of the one for forward pump and probe beams. In this case only one dynamic grating may be formed in the medium.