Abstract
We have observed optically induced birefringence1 in Ti:AI2O3 at signal wavelengths of 632.8 and 790.7 nm during the course of small-signal gain measurements2 on a Ti:AI2O3 amplifier pumped with 532-nm radiation from a frequency-doubled Q-switched (10-ns pulse) Nd:YAG laser. The changes in intensity of the signal beam due to induced birefringence were found to decay with a time constant characteristic of the fluorescence lifetime of Ti3+ ions. We, therefore, attribute the induced birefringence to the Ti3+ excited-state (2Eg) population.
© 1988 Optical Society of America
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