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Time‐Resolved Degenerate Four‐Wave Mixing in CuCl under Nanosecond Pulsed Excitation
Author(s) -
Frindi M.,
Hönerlage B.,
Levy R.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221380128
Subject(s) - nanosecond , four wave mixing , excitation , mixing (physics) , degenerate energy levels , exciton , resonance (particle physics) , atomic physics , attenuation , pulse (music) , coherence (philosophical gambling strategy) , absorption (acoustics) , laser , materials science , optics , molecular physics , nonlinear optics , chemistry , physics , condensed matter physics , quantum mechanics , detector
Using nanosecond laser pulses the time behaviour is investigated of degenerate four‐wave mixing close to the biexcitonic resonance in CuCl. The signal emission presents different time evolutions depending on excitation conditions. Its generation rate shows intensity changes and retardation effects. These effects are explained by an attenuation of the pump pulse through a time‐dependent nonlinear absorption and, at the resonance, by a loss of coherence related to collisions with bi‐excitons.