Crystal oscillators are loosely divided via the frequency they perform at and whether they are basic oscillators—work with the frequency marked around 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 thermal compensation https://bookmarkshq.com/story20490812/5-simple-techniques-for-bulk-crystal-oscillator