Crystal oscillators are loosely divided by the frequency they operate at and whether they are fundamental oscillators—operate 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 to the orthogonal thermal payment https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html