Method and device for inhibiting laser wavelength temperature drift

Abstract

The invention discloses a method and a device for inhibiting laser wavelength temperature drift, relates to laser wavelength measurement and laser frequency stabilization, and belongs to the field of atomic physics and quantum optics. The device comprises a laser output light unit, a high-precision wavemeter monitoring unit and a temperature drift feedback control unit. And measuring a wavelength drift coefficient a of environment temperature T environment-laser wavelength lambda. Measuring a set temperature Tset-laser wavelength lambda and a wavelength control coefficient b; and according to the measured coefficients a and b, calculating to obtain a temperature gradient compensation coefficient c (c = a / b). When the laser works normally, the T environment is collected in real time, and the set temperature Tset of the laser is changed according to the temperature gradient compensation coefficient c and the T environment, so that the laser wavelength temperature drift is inhibited. According to the invention, active suppression of laser wavelength temperature drift is realized by regulating and controlling a temperature gradient compensation coefficient. The device has the advantages of being simple in structure, high in wavelength drift suppression capability, low in energy loss and the like.