Crystal oscillators are loosely divided with the frequency they get the job done at and whether they are essential oscillators—perform at the frequency marked to the can or at even multiples of that (overtone oscillators). High-repetition-fee and superior-energy picosecond regenerative amplifier based upon a single bulk Nd:GdVO4 crystal 中原子或分子的排列具有三维空间的周期性，隔一定的... https://bookmarkgenius.com/story18838989/a-simple-key-for-bulk-crystal-oscillator-unveiled