Abstract
An optical parametric amplifier based on periodically poled was used to generate 3-ns pulses at . The device was pumped by a -switched Nd:YAG laser, and the signal output-pulse energy reached ; the maximum gain was 66 dB. The seed source was an Er–Yb:glass microchip laser. A theoretical fit to experimental data gave an effective nonlinear coefficient of , close to the highest values reported for periodically poled . Furthermore, the broad parametric gain observed could be used for broadband pulse amplification.
© 2001 Optical Society of America
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