Journal
OPTICS LETTERS
Volume 27, Issue 5, Pages 315-317Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.27.000315
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We investigate the adaptive optimization of broadband laser pulses, using a closed-loop learning algorithm in which the merit function is derived from two-photon absorption in semiconductors. Photoluminescence experiments with US thin films and photocurrent measurements of a GaAsP photodiode have been performed. The experimental data demonstrate that reliable and accurate pulse compression to the bandwidth limit can be achieved, unperturbed by nontrivial phase effects. Therefore two-photon absorption proves to be an easy-to-implement alternative to second-harmonic generation for the compression of broadband laser pulses. (C) 2002 Optical Society of America.
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