The two oscillator circuits underneath are ideal for applying crystal oscillators in sequence or parallel manner: Large-repetition-level and higher-electric power picosecond regenerative amplifier based on an individual 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 superior power passively mode-locked picosecond oscillator depen... https://socialbaskets.com/story4523569/bulk-crystal-oscillator-an-overview