Crystal oscillators are loosely divided from the frequency they get the job done at and whether they are basic oscillators—operate with the frequency marked about the can or at even multiples of that (overtone oscillators). We current a Nd:GdVO4 bulk crystal oscillator with >70 WTEM00 laser output according to the https://bookmarkforce.com/story19041014/facts-about-bulk-crystal-oscillator-revealed