Crystal oscillators are loosely divided by the frequency they get the job done at and whether or not they are elementary oscillators—perform in the frequency marked to the can or at even multiples of that (overtone oscillators). We existing a Nd:GdVO4 bulk crystal oscillator with >70 WTEM00 laser output according https://ilovebookmarking.com/story18951262/everything-about-bulk-crystal-oscillator