Abstract
Laser oscillation of Cr:forsterite was obtained with ruby laser pumping to the lowest-lying levels of the 3T1 band in Cr4+. Pump polarization effects, temporal response, and broadband 220-nm tuning are reported. Frequency doubling in potassium titanyl phosphate generate tunable red–yellow light. This unconventional excitation scheme is of interest for potential high-energy output and for direct diode pumping.
© 1997 Optical Society of America
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