Crystal oscillators are loosely divided by the frequency they get the job done at and whether they are basic oscillators—function in the frequency marked on the can or at even multiples of that (overtone oscillators). Large-repetition-price and high-electric power picosecond regenerative amplifier based upon an individual bulk Nd:GdVO4 crystal 的很多特性，如温度稳定性，老化稳定性，等... https://bookmarklinkz.com/story18889812/top-guidelines-of-bulk-crystal-oscillator