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2005 | 107 | 1 | 132-136
Article title

Terahertz Emission from Narrow Gap Semiconductors Photoexcited by Femtosecond Laser Pulses

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EN
Abstracts
EN
Large increase in the emitted terahertz power was observed for p-InAs samples with the p-doping levels of approximately 10^{16}-10^{17} cm^{-3}. This increase was explained by a large surface depletion layer and an electric-field-induced optical rectification effect in the layer. Terahertz fields radiated by the samples of all three investigated Cd_xHg_{1-x}Te layers was of the same order of magnitude. No azimuthal angle dependence of the radiated signal was detected, which evidences that linear current surge effect is dominating over nonlinear optical rectification. Azimuthal angle and magnetic fields emission witness that it is caused by linear photo-Dember type processes.
Keywords
Contributors
  • Semiconductor Physics Institute, A. Goštauto 11, 01108, Vilnius, Lithuania
author
  • Semiconductor Physics Institute, A. Goštauto 11, 01108, Vilnius, Lithuania
author
  • Semiconductor Physics Institute, A. Goštauto 11, 01108, Vilnius, Lithuania
author
  • Semiconductor Physics Institute, A. Goštauto 11, 01108, Vilnius, Lithuania
References
  • 1. D. Krokel, D. Grischkowsky, M.B. Ketchen, Appl. Phys. Lett., 54, 1046, 1989
  • 2. Q. Wu , X.-C. Zhang, Appl. Phys. Lett., 56, 886, 1990
  • 3. P.N. Saeta, B.I. Greene, S.L. Chuang, Appl. Phys. Lett., 63, 3482, 1994
  • 4. N. Sarukura, H. Ohtake, S. Izumida, Z. Liu, J. Appl. Phys., 84, 654, 1998
  • 5. P. Gu, M. Tani, S. Kono, K. Sakai, X.-C. Zhang, J. Appl. Phys., 91, 5533, 2002
  • 6. S. L. Chuang, S. Schmitt-Rink, B.I. Greene, P.N. Saeta, A.F.J. Levi, Phys. Rev. Lett., 68, 102, 1992
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n115kz
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