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Title: Midinfrared optical absorption in germanium measured with a free-electron laser at room temperature

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
; ; ; ;  [1]
  1. Department of Electronic Engineering, Osaka University, Suita City, Osaka 565-0871 (Japan)

We have investigated the effects of high-power laser pulses on a transparent material using a free-electron laser (FEL). We have measured optical transmittance through a germanium crystal in the midinfrared region, {lambda}=5.3-12.4 {mu}m at room temperature. In spite of the fact that germanium is transparent in the midinfrared region, we have observed strong suppression of optical transmission under high-intensity FEL excitation.

OSTI ID:
20853889
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 74, Issue 20; Other Information: DOI: 10.1103/PhysRevB.74.205206; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
Country of Publication:
United States
Language:
English