The 2 oscillator circuits under are ideal for applying crystal oscillators in sequence or parallel mode: Significant-repetition-amount and higher-electric power picosecond regenerative amplifier dependant on one bulk Nd:GdVO4 crystal PDF A large electricity passively method-locked picosecond oscillator dependant on Nd:GdVO4 crystal with σ polarized in-band pumping with fifty one% optical https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html