The 2 oscillator circuits under are ideal for utilizing crystal oscillators in collection or parallel method: Significant-repetition-amount and higher-power picosecond regenerative amplifier based on an individual bulk Nd:GdVO4 crystal A timing reference incorporating a single-crystal-silicon micromechanical resonator with a quality issue of greater than a million as well as a https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html