LASER OPTICAL PUMPING DEVICE FOR QUANTUM DISCRIMINATOR Russian patent published in 2014 - IPC H03L7/26 H01S5/687 

FIELD: radio engineering, communication.

SUBSTANCE: device comprises optically linked laser emitter, optical frequency correction module with a Y-shaped optical splitter at the output and a quantum discriminator, the output of which is connected through a photodetector to the signal input of a feedback unit, the output of which is connected to the control input of the optical frequency correction module, and the feedback unit comprises a synchronous detector, an integrator, a frequency grid synthesiser, a controlled buffer amplifier, a modulation signal generator, a level setter and a differential amplifier.

EFFECT: improved noise properties owing to use of a low-noise circuit for stabilising optical pumping light frequency.

2 cl, 1 dwg