The 2 oscillator circuits beneath are suited to utilizing crystal oscillators in collection or parallel mode: High-repetition-charge and superior-energy picosecond regenerative amplifier based upon a single bulk Nd:GdVO4 crystal A timing reference incorporating one-crystal-silicon micromechanical resonator with an excellent aspect of more substantial than a million and a resonant freq... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html