The two oscillator circuits down below are ideal for applying crystal oscillators in sequence or parallel manner: High-repetition-fee and superior-energy picosecond regenerative amplifier based upon a single bulk Nd:GdVO4 crystal A timing reference incorporating an individual-crystal-silicon micromechanical resonator with an outstanding factor of greater than a million in addition to https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html