Abstract

Four-wave mixing by gain saturation in a laser-pumped Ti:sapphire (Ti3+:Al2O3) amplifier is demonstrated for the first time to our knowledge. Small-signal gain in excess of 250 has been obtained by intense laser pumping at 532 nm, resulting in observed four-wave mixing energy reflectivity as high as 360% for nanosecond pulses at 780 nm.

© 1995 Optical Society of America

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