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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 17, Iss. 9 — May. 1, 1992
  • pp: 658–660

Multiple- and single-shot autocorrelator based on two-photon conductivity in semiconductors

Yoshihiro Takagi, Tohru Kobayashi, Keitaro Yoshihara, and Shunji Imamura  »View Author Affiliations


Optics Letters, Vol. 17, Issue 9, pp. 658-660 (1992)
http://dx.doi.org/10.1364/OL.17.000658


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Abstract

Two-photon-induced conductivity has been observed in Si and GaAsP photodiodes and in a CdS photoconductive cell at room temperature and applied to the ultrashort optical pulse measurement with a simplified Michelson-type arrangement. The efficiency of the two-photon conductivity is found to be 3 × 10−14I A/W, where I is the intensity of the incident pulse in watts per squared centimeter. A single-shot pulse-width measurement has also been performed by using a two-dimensional silicon CCD array. Use of these inexpensive photodetectors with nonlinear characteristics has proved to be convenient for intensity correlators because of their instantaneous response to temporal coincidence of optical pulses and ease of optical arrangement.

© 1992 Optical Society of America

History
Original Manuscript: October 28, 1991
Published: May 1, 1992

Citation
Yoshihiro Takagi, Shunji Imamura, Tohru Kobayashi, and Keitaro Yoshihara, "Multiple- and single-shot autocorrelator based on two-photon conductivity in semiconductors," Opt. Lett. 17, 658-660 (1992)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-17-9-658

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