Time-resolved THz spectroscopy of proton-bombarded InP

Authors
Messner, C Kostner, H Hopfel, RA Unterrainer, K
Citation
C. Messner et al., Time-resolved THz spectroscopy of proton-bombarded InP, J OPT SOC B, 18(9), 2001, pp. 1369-1371
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
07403224 → ACNP
Volume
18
Issue
9
Year of publication
2001
Pages
1369 - 1371
Database
ISI
SICI code
0740-3224(200109)18:9<1369:TTSOPI>2.0.ZU;2-W
Abstract
We investigate the recombination dynamics of photoexcited carriers in proto n-bombarded InP crystals using near-infrared pump-THz-probe spectroscopy. T he carrier lifetime is directly related to the proton dose and hence to the induced trap density: In weakly damaged samples we observe a saturation of the trap states for high-excitation densities. For highly damaged samples the time-dependent THz transmission can be explained by taking into account an Auger-assisted trapping process. (C) 2001 Optical Society of America.