The 2 oscillator circuits below are suited to utilizing crystal oscillators in collection or parallel mode: Substantial-repetition-level and higher-electric power picosecond regenerative amplifier according to an individual bulk Nd:GdVO4 crystal A timing reference incorporating just one-crystal-silicon micromechanical resonator with an outstanding variable of bigger than a million in ... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html