Tunable royal purple laser

The invention is a tunable green-blue-purple laser. It is a micro-laser device which adopts the red-near infrared tunable laser excited by ª‰-BaB2O4 nonlinear optical crystal frequency-doubling tunable laser crystal Cr3+:GdAl3(BO3) 4 to generate the tunable green-blue-purple layer. The used tunable laser crystal is CrxGd1-x Al3(BO3) 4 (x=0.005-0.05), and it uses ordinary flash lamp or self-made 593nm wave band all-solid laser pumping source for pumping to generate 650nm-850nm tunable laser, and then doubles frequency by ª‰-BaB2O4 nonlinear optical crystal to generate 325nm-425nm tunable green-blue-purple laser. 一种可调谐蓝紫色激光器涉及激光器件领域。阐述一种采用β-BaB#-[2]O#-[4]晶体倍频可调谐激光晶体Cr#+[3+]：GdAl#-[3](BO#-[3])#-[4]激射的红光-近红外可调谐激光产生可调谐蓝紫色激光的小型激光器件。器件中使用的可调谐激光晶体Cr#-[x]Gd#-[1-x]Al#-[3](BO#-[3])#-[4](x＝0.005-0.05)，阈值低，效率高，用普通闪光灯或自制的593nm波段的全固态激光泵浦源泵浦，即可以产生650nm-850nm的可调谐激光，然后通过β-BaB#-[2]O#-[4]晶体倍频晶体便可以产生325nm-425nm的可调谐蓝紫色激光。该器件涉及的光学元件加工精度要求不苛刻。