Crystal oscillators are loosely divided by the frequency they perform at and whether or not they are elementary oscillators—function for the frequency marked within the can or at even multiples of that (overtone oscillators). We existing a Nd:GdVO4 bulk crystal oscillator with >70 WTEM00 laser output based on the orthogonal https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html