The pumping threshold of a Cr:forsterite laser is lowered by optimizing a double-pass pumping in a sufficiently short crystal. This solution for the first time allows nearly room-temperature Cr:forsterite cw operation with a threshold as low as 330-mW at 1064 nm and permits the laser to be pumped with a single transverse mode vanadate minilaser delivering only 900 mW.
© 2000 Optical Society of America
Antonio Agnesi, Enrico Piccinini, and Giancarlo Reali, "Threshold optimization of all-solid-state Cr:forsterite lasers," J. Opt. Soc. Am. B 17, 198-201 (2000)