METHOD OF STABILISATION OF LASER EMISSION FREQUENCY Russian patent published in 2009 - IPC H01S3/139 

FIELD: physics.

SUBSTANCE: resonance of emission power in the laser resonator is shaped. A signal proportional to target power of the laser emission is measured. The laser resonator is modulated using the trial signal proportional to fluctuations of frequency of the laser emission. Sign of current lapse rate of resonance of power of radiation on the signal proportional to target power of radiation of the laser and the termed trial signal are determined, and on each step of fine tuning the signal of fine tuning of the resonator of the laser is shaped, coinciding with sign of current lapse rate, on extreme of resonance of power of the laser emission. The amplitude of a signal of fine tuning on each step of fine tuning is variable and proportional to current quantity of the module of coefficient of asymmetry - to the normalised 3 central moment of function of a density function of a signal of target power of the laser emission.

EFFECT: increase of stability of laser emission frequency at the expense of magnification of accuracy of adjustment of resonator at extreme of line, reference point.

2 dwg