The 2 oscillator circuits below are ideal for making use of crystal oscillators in sequence or parallel method: Large-repetition-amount and high-electricity picosecond regenerative amplifier dependant on just one 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 high electricity passively method-locked picosecond oscillator based on... https://wise-social.com/story4431228/a-secret-weapon-for-bulk-crystal-oscillator