Study of ultrafast relaxation phenomena based on resonant optical mixing process
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Received Date:
1990-03-29
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Abstract
The measurement of ultrafast relaxation phenomena on the order of picoseconds or femtoseconds using the techniques based on resonant optical miixng process without ultrashort light pulses has been reported in this paper. By means of density-matrix method, we calculated the nonlinear polarzability TR for this resonant mixing process generated in a two-level system. The results show that the frequency characteristic in this paper depends on longitudinal (T1) and transverse (T2) relaxation times. The T1 and T2, relaxation times of Malachite Green in water have been also reported. Their values are 1.20 ps and 0.09 ps respectively.
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