Saturable absorber Co2+:MgAl2O4 crystal for Q switching of 1.34-μm Nd3+:YAIO3 and 1.54-μm Er3+:glass lasers

被引:99
作者
Yumashev, KV [1 ]
机构
[1] Belarusian State Polytech Acad, Ctr Int Laser, Minsk 220027, BELARUS
关键词
D O I
10.1364/AO.38.006343
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Saturable-absorber Q switching of a neodymium-doped YAlO3 laser at 1.34 mu m and an erbium-doped glass laser at 1.54 mu m with a Co2+:MgAl2O4 crystal was demonstrated. Q-switched 1.34-mu m pulses of 19-mJ energy and 60-ns duration and Q-switched 1.54-mu m pulses of 2.7-mJ energy and 75-ns width were obtained. The ground-state absorption cross sections of the Co2+:MgAl2O4 crystal were estimated to be (2.8 +/- 0.4) x 10(-19) and (3.5 +/- 0.6) x 10(-19) cm(2) at 1.34 and 1.54 mu m, respectively. The T-4(1)(F-4) --> (4)A(2) relaxation time of the Co2+ ion in the MgAl2O4 crystal was measured to be similar to 350 ns. (C) 1999 Optical Society of America.
引用
收藏
页码:6343 / 6346
页数:4
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