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High-sensitivity two-photon absorption microcavity autocorrelator

Abstract : A GaAs-AlAs microcavity device has been used as a photodetector in an autocorrelator for measuring the temporal pulsewidth of 1.5-/spl mu/m optical pulses. Enhancement of the two-photon absorption photocurrent due to the microcavity structure results in an autocorrelation (average power times peak power) sensitivity of 9.3/spl times/10/sup -4/ (mW)/sup 2/, which represents two orders of magnitude improvement when compared with conventional autocorrelators.
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Contributor : Hervé Folliot <>
Submitted on : Friday, April 20, 2007 - 1:29:20 PM
Last modification on : Tuesday, January 12, 2021 - 4:50:51 PM

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T. Krug, M. Lynch, A.L. Bradley, J.F. Donegan, Hervé Folliot, et al.. High-sensitivity two-photon absorption microcavity autocorrelator. Photonics Technology Letters, IEEE, 2004, 16 (6), pp.1543 - 1545. ⟨10.1109/LPT.2004.827102⟩. ⟨hal-00142660⟩



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