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Optics Letters

Optics Letters

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  • Vol. 24, Iss. 24 — Dec. 15, 1999
  • pp: 1868–1870

Measurement of pulse asymmetry by three-photon-absorption autocorrelation in a GaAsP photodiode

Patrick Langlois and Erich P. Ippen  »View Author Affiliations


Optics Letters, Vol. 24, Issue 24, pp. 1868-1870 (1999)
http://dx.doi.org/10.1364/OL.24.001868


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Abstract

Three-photon absorption in a GaAsP photodiode is used for what is believed to be the first time for nonlinear optical autocorrelation at wavelengths from 1.4 to 1.6µm . Theoretical intensity dependence and contrast ratios are achieved, and the ratio of the three- to the two-photon-absorption coefficient is measured. Finally, it is demonstrated that pulse asymmetry can be measured with no direction-of-time ambiguity by use of unbalanced three-photon-absorption autocorrelation.

© 1999 Optical Society of America

OCIS Codes
(040.5150) Detectors : Photoconductivity
(190.4180) Nonlinear optics : Multiphoton processes
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Citation
Patrick Langlois and Erich P. Ippen, "Measurement of pulse asymmetry by three-photon-absorption autocorrelation in a GaAsP photodiode," Opt. Lett. 24, 1868-1870 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-24-1868

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