The 2 oscillator circuits below are appropriate for using crystal oscillators in sequence or parallel mode: Large-repetition-level and higher-electric power picosecond regenerative amplifier according to one bulk Nd:GdVO4 crystal The final results indicated that GaAs is usually a promising passively Q-switched saturable absorber and still has prospective to explore. Design https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html