Compact alternate pumping and electro-optic Q-switching dual-wavelength output method and laser

Abstract

The invention discloses a compact alternate pumping and electro-optical Q-switching dual-wavelength output method and a laser. The laser comprises a dual-wavelength total reflective mirror, a lath gain medium, a prism, a pinhole diaphragm, a polaroid, an electro-optical Q-switching module, a dual-wavelength 1 / 4 wave plate, an output mirror, a first pumping source and a second pumping source. The dual-wavelength total reflective mirror, the lath gain medium, the prism, the pinhole diaphragm, the polarizing film, the electro-optical Q-switching module, the dual-wavelength 1 / 4 wave plate and theoutput mirror form a laser resonant cavity and are sequentially arranged along the optical path direction of the laser. According to the scheme of the invention, the first side and the second side above the slab gain medium are alternately pumped, so that the dual-pulse laser alternate output of a first wavelength and a second wavelength can be realized. The size of the laser can be greatly reduced. The portability of the laser can be improved. Due to the wavelength selection, the laser has more application scenarios and the applicability of the laser is widened.

Description

technical field [0001] The invention relates to the field of solid-state lasers, in particular to a compact alternate pumping and electro-optic Q-switching dual-wavelength output method and a laser. Background technique [0002] The controllable output of dual-wavelength laser has important application prospects in the fields of military, civilian, frequency doubling and frequency, and has potential application value in the fields of laser communication and feature recognition. At present, there are mainly three ways to achieve dual-wavelength alternate output, which are: the first way is to use two lasers, and the pump pumps each laser separately through electronic control to achieve two wavelengths of laser output, two wavelengths The lasers are output at the same time or the output time has a certain interval. The advantage of the first implementation is that each laser is designed separately, which can achieve the ultimate efficiency of the two wavelength lasers, and the...

AI Technical Summary

Problems solved by technology

At present, there are mainly three ways to achieve dual-wavelength alternate output, which are: the first way is to use two lasers, and the pump pumps each laser separately through electronic control to achieve two-wavelength laser output. The lasers are output at the same time or the output time has a certain interval. The advantage of the first implementation is that each laser is designed separately, which can achieve the ultimate efficiency of the two wavelength lasers, and the combination of the two wavelength lasers is flexible. The disadvantage is that it is a separate Two lasers, so occupy a large volume

The second implementation method is a laser with dual gain media, which also pumps each gain medium separately through electronic control, so as to achieve dual wavelength alternate output. This method shares the resonant cavity, compared with the first implementation method. The size is reduced, and it also has the advantage of flexible dual-wavelength alternate output. The disadvantage is that because of the shared resonator, in order to achieve approximately the same dual-wavelength laser energy, it is necessary to suppress the strong gain laser, which ultimately reduces the overall efficiency of the laser.

The third implementation method is a single laser medium, which suppresses the loss through the resonator and realizes simultaneous output of dual wavelengths. This method has the smallest volume, but the dual wavelengths cannot be output alternately, and the efficiency is very low, which will have certain limitations in application.

It can be seen from the above that the methods of dual-wavelength alternate output in the prior art all have deficiencies in varying degrees

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