LASER SYSTEM WITH OPTICAL FEEDBACK Russian patent published in 2021 - IPC H01S3/107 G01N21/17 

FIELD: laser systems.

SUBSTANCE: invention relates to a laser system with optical feedback. The claimed laser system with optical feedback contains laser sensitive to optical feedback (110) that emits, through output optical fiber (111), a continuous frequency-controlled distributed source optical wave (L0p), called the source wave; optical resonator (120) connected by optical feedback to a laser and made with the possibility to generate intracavity wave (L5), one part of which returns to the laser in the form of backward-distributed optical wave (L0c); electro-optical fiber modulator (115) placed on the optical path between the laser and the optical resonator, wherein the mentioned electro-optical modulator is made with the possibility to generate phase-shifted source wave (L1p) by phase-shifting the source wave and phase-shifted backward-distributed wave (L0c) by phase-shifting the backward-distributed optical wave, called a feedback wave, which reaches the laser; phase-regulating device (130) for generating control signal (SC) for an electro-optical modulator from mismatch signal (SE) that characterizes the relative phase between source wave (L0p) and feedback wave (L0c) to compensate for the relative phase between the source wave and the feedback wave.

EFFECT: simplified control of the laser/resonator phase shift.

14 cl, 7 dwg