The two oscillator circuits underneath are suitable for working with crystal oscillators in series or parallel method: Higher-repetition-fee and high-electrical power 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，隔一定的距离重复出现，这种周期性规律是 A large electricity passively manner-locked picosecond oscillator... https://bookmarkassist.com/story18862614/a-simple-key-for-bulk-crystal-oscillator-unveiled