Abstract
The ordinary and extraordinary nonlinear refractive indices of and were determined from the measured spectral changes in intense 800-nm, 150-fs pulses, propagated through these uniaxial crystals. A numerical analysis involving both group-velocity dispersion and self-phase modulation gave in and in for ordinary polarization; results for extraordinary beams agreed with these values to within experimental error. These high values suggest that these crystals are viable host matrices for pulsed solid-state lasers, capable of producing subpicosecond pulses through Kerr-lens mode locking.
© 1997 Optical Society of America
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