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Title: Measurement of the temperature dependence of midinfrared optical absorption spectra of germanium in intense laser fields

Abstract

We have investigated the temperature dependence of midinfrared optical absorption in germanium under intense free-electron laser fields. We observed that the absorption decreases as temperature decreases. We find that the temperature dependence of the absorption is consistent with calculations based on the Keldysh theory, in which the temperature dependence of the direct-gap energy of germanium is considered.

Authors:
; ; ; ;  [1]
  1. Department of Electronic Engineering, Osaka University, Suita City, Osaka 565-0871 (Japan)
Publication Date:
OSTI Identifier:
21045874
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 20; Other Information: DOI: 10.1103/PhysRevB.75.205101; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ABSORPTION; ABSORPTION SPECTRA; FREE ELECTRON LASERS; GERMANIUM; INFRARED SPECTRA; LASER RADIATION; SEMICONDUCTOR MATERIALS; TEMPERATURE DEPENDENCE

Citation Formats

Furuse, H., Mori, N., Kubo, H., Momose, H., and Kondow, M. Measurement of the temperature dependence of midinfrared optical absorption spectra of germanium in intense laser fields. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.205101.
Furuse, H., Mori, N., Kubo, H., Momose, H., & Kondow, M. Measurement of the temperature dependence of midinfrared optical absorption spectra of germanium in intense laser fields. United States. doi:10.1103/PHYSREVB.75.205101.
Furuse, H., Mori, N., Kubo, H., Momose, H., and Kondow, M. Tue . "Measurement of the temperature dependence of midinfrared optical absorption spectra of germanium in intense laser fields". United States. doi:10.1103/PHYSREVB.75.205101.
@article{osti_21045874,
title = {Measurement of the temperature dependence of midinfrared optical absorption spectra of germanium in intense laser fields},
author = {Furuse, H. and Mori, N. and Kubo, H. and Momose, H. and Kondow, M.},
abstractNote = {We have investigated the temperature dependence of midinfrared optical absorption in germanium under intense free-electron laser fields. We observed that the absorption decreases as temperature decreases. We find that the temperature dependence of the absorption is consistent with calculations based on the Keldysh theory, in which the temperature dependence of the direct-gap energy of germanium is considered.},
doi = {10.1103/PHYSREVB.75.205101},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 20,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}