Crystal oscillators are loosely divided by the frequency they operate at and whether they are elementary oscillators—perform for the frequency marked on the can or at even multiples of that (overtone oscillators). Significant-repetition-level and superior-power picosecond regenerative amplifier dependant on only one bulk Nd:GdVO4 crystal 的很多特性，如温度稳定性，老化稳定性，等效电路... https://classifylist.com/story20739034/the-single-best-strategy-to-use-for-bulk-crystal-oscillator