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Coherent Signal Generation in CuCl by Light‐Induced Grating and Induced Biexciton Decay
Author(s) -
Lévy R.,
Gomes M. J. M.,
Kippelen B.,
Hönerlage B.
Publication year - 1990
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.2221580139
Subject(s) - dephasing , grating , streak camera , picosecond , signal (programming language) , optics , physics , four wave mixing , pulse (music) , streak , mixing (physics) , materials science , nonlinear optics , atomic physics , laser , condensed matter physics , quantum mechanics , detector , computer science , programming language
Using a picosecond light source and a streak camera as detection system, the temporal evolution of the signal generated throughout degenerate four‐wave mixing (DFWM) experiments is analysed in CuCl at low temperature. The signal emission shows different temporal behaviour depending on whether the test pulse reaches the surface of the sample before, during, or after the pump pulse. This enables one to distinguish the light‐induced grating contribution from the induced decay of quasi‐particles. The latter process can then be used to determine their dephasing time.