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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3528–3530

Terahertz tomography of a photo-induced carrier based on pump-probe spectroscopy using counterpropagation geometry

Masaaki Tsubouchi, Masaya Nagai, and Yasuhiro Ohshima  »View Author Affiliations

Optics Letters, Vol. 37, Issue 17, pp. 3528-3530 (2012)

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A novel technique for the terahertz (THz) tomography of a photo-induced carrier that is based on optical-pump THz-probe time-resolved reflection spectroscopy using counterpropagation geometry of the pump and probe pulses has been proposed. Transient reflection due to the photo-induced carrier provides information about the physical properties and spatial distribution separately. We have experimentally demonstrated this method using a silicon wafer. The obtained complex reflection can be reproduced by the exact solution of Maxwell’s equations, assuming an exponential distribution of the photo-induced carrier density.

© 2012 Optical Society of America

OCIS Codes
(320.5390) Ultrafast optics : Picosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: May 7, 2012
Revised Manuscript: July 17, 2012
Manuscript Accepted: July 18, 2012
Published: August 21, 2012

Masaaki Tsubouchi, Masaya Nagai, and Yasuhiro Ohshima, "Terahertz tomography of a photo-induced carrier based on pump-probe spectroscopy using counterpropagation geometry," Opt. Lett. 37, 3528-3530 (2012)

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