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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 18, Iss. 9 — Sep. 1, 2001
  • pp: 1369–1371

Time-resolved THz spectroscopy of proton-bombarded InP

C. Messner, H. Kostner, R. A. Höpfel, and K. Unterrainer  »View Author Affiliations


JOSA B, Vol. 18, Issue 9, pp. 1369-1371 (2001)
http://dx.doi.org/10.1364/JOSAB.18.001369


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Abstract

We investigate the recombination dynamics of photoexcited carriers in proton-bombarded InP crystals using near-infrared pump–THz-probe spectroscopy. The 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.

© 2001 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Citation
C. Messner, H. Kostner, R. A. Höpfel, and K. Unterrainer, "Time-resolved THz spectroscopy of proton-bombarded InP," J. Opt. Soc. Am. B 18, 1369-1371 (2001)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-18-9-1369


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References

  1. For a review. see, e.g., J. Shah, ed., Ultrafast Spectroscopy of Semiconductors and Semiconductor Nanostructures (Springer-Verlag, New York, 1996).
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  8. C. Messner, M. Sailer, H. Kostner, and R. A. Höpfel, “Coherent generation of tunable, narrow-band THz radiation by optical rectification of femtosecond pulse trains,” Appl. Phys. B 64, 619–621 (1997).

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