Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 16, Issue 6, Pages 1543-1545Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2004.827102
Keywords
cavities; correlation; nonlinear detection; optical pulse measurements; photodetectors; photodiodes
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A GaAs-AlAs microcavity device has been used as a photodetector in an autocorrelator for measuring the temporal pulsewidth of 1.5-mum 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 x 10(-4) (mW)(2), which represents two orders of magnitude improvement when compared with conventional autocorrelators.
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