Abstract

Ti:Al₂O₃ laser with 5 W average power and 40% efficiency have developed at doubled Nd:YAlO₃ laser pumping (lambda = 0.54 micrometers, f = 7-10 kHz, Pout = 13 W). Flashlamp-pumped Cr:GSGG laser with output energy 0.1 J at 12.5 Hz prodected to color centers formation induced by UV pump light to provide 10⁵ shots was designed. Cr:YAG laser with tuningrange 1.35 -1.45 micrometers at 1.06-micrometer laser pumping has developed. Laser action on the ³T₂ - ³A₂ transition is due to the Cr⁴⁺ ion in tetrahedral sites of YAG lattice. An important role of ³T₂ excited-state absorption has been noted. An overall efficiency of 7-8% was obtained at quasi-cw ND. YAG laser pumping at T= 300 K.

© 1989 Optical Society of America