852 nm wavelength high-power Faraday laser and implementation method thereof

Abstract

The invention discloses a 852 nm wavelength high-power Faraday laser and an implementation method thereof. The laser comprises a 852 nm high-power single-peak high-transmittance Faraday atom light filter, a laser diode, a collimating lens, a beam expanding device, an endoscope and piezoelectric ceramics. Polarized light output by the laser diode sequentially passes through the collimating lens and the beam expanding device and then enters the Faraday atom light filter. The Faraday atom light filter is used for carrying out mode selection on the incident laser and outputting the laser to the endoscope; the light beam returned by the endoscope sequentially passes through the Faraday atom light filter, the beam expanding device and the collimating lens and then returns to the laser diode to form light feedback; and the piezoelectric ceramic is fixed on the endoscope and is used for controlling the cavity length of the outer cavity. Line width can be narrowed, frequency stability is improved, center frequency drift is suppressed, the defect that frequency is easily affected by current change, temperature change, mechanical vibration and the like is overcome, and the overall performance of a system is greatly improved.

Description

Technical field [0001] The present invention belongs to the field of semiconductor laser technology, in particular to an 852nm wavelength power Faraday laser and a method of implementation thereof. Background [0002] Semiconductor lasers due to their long service life, small size, light weight, good tunableness, narrow line width and other advantages, has been in many industries such as military, medical, industrial and other applications, has become one of the most widely used lasers. When semiconductor lasers are applied, they often add an external cavity in addition to their resonators, which is called an external cavity semiconductor laser. In recent years, outer cavity semiconductor lasers have received more and more attention due to their superior performance, and have been widely used in cold atom physics, quantum optics, atomic clock technology, laser frequency stabilization, laser ranging, laser guidance, laser communication and other fields. [0003] In special applic...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the 852nm high-power external cavity semiconductor laser with too wide line width, excessive center frequency drift, and frequency easily affected by current changes, temperature changes, and mechanical vibrations, the present invention proposes a 852nm high-power Faraday laser and its implementation method , can narrow the line width, improve the frequency stability of the 852nm high-power external cavity semiconductor laser, suppress the center frequency drift, and overcome the disadvantages that the frequency is easily affected by current changes, temperature changes and mechanical vibrations, thereby greatly improving the high-power external cavity Overall System Performance of Diode Lasers

Images