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Proceedings Paper

Transient Grating Spectroscopy In CuCl
Author(s): Bernard Kippelen; Roland Levy; Bernd Honerlage; Jean B. Grun
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Paper Abstract

Picosecond wave-mixing experiments are performed on CuCl at low temperature near the two-photon absorption resonance of the biexciton. In a two-beam configuration, a degenerate four-wave mixing experiment, using a streak camera system, enables us to separate two different contributions to the generation of the signal : self-diffraction and induced recombination. Transverse relaxation times of the biexciton could thus be determined. In a three-beam configuration, the test pulse is diffracted on the grating induced by two interfering pump pulses. The time evolution of this grating is governed by coherent and incoherent scattering processes. Due to the incoherent part, a signal is observed on a much longer time scale than in a two-beam configuration where only coherent processes show-up. Its decay presents different time constants which characterize the time evolution of the different quasiparticle populations determining the optical properties of the material.

Paper Details

Date Published: 22 December 1989
PDF: 6 pages
Proc. SPIE 1127, Nonlinear Optical Materials II, (22 December 1989); doi: 10.1117/12.961397
Show Author Affiliations
Bernard Kippelen, Institut de Physique et Chimie des Materiaux de Strasbourg (France)
Roland Levy, Institut de Physique et Chimie des Materiaux de Strasbourg (France)
Bernd Honerlage, Institut de Physique et Chimie des Materiaux de Strasbourg (France)
Jean B. Grun, Institut de Physique et Chimie des Materiaux de Strasbourg (France)


Published in SPIE Proceedings Vol. 1127:
Nonlinear Optical Materials II

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