Laser refrigerator and laser refrigeration method

Abstract

The invention relates to a laser refrigerator and a laser refrigeration method. The laser refrigerator comprises a pumping laser source, a body waveguide and a reflector. The pumping laser source emits continuous laser as incident light; the body waveguide is made of a single crystal diamond material containing a silicon vacancy defect center, the body waveguide is a cube with a beveled angle, the beveled angle forms a section, incident light enters the body waveguide from the section, the incident light forms emergent light after being transmitted by the body waveguide, and the incident light is totally reflected for multiple times in the body waveguide; the emergent light is emitted to the reflector to form reflected light, and the reflected light is returned to the section. According to the laser refrigerator, the silicon vacancy defect center serves as a refrigerating medium, the body waveguide is provided with the beveled corner, total emission is formed in the body waveguide through incident light, the interaction distance between pump light and the defect center is increased, the manufacturing process is simpler, the utilization efficiency of the pump light is improved, and the refrigerating efficiency of the laser refrigerator is improved; the action distance between the pump light and the defect center is increased, and the method is suitable for practical application.

Description

technical field [0001] The invention relates to the technical field of semiconductor refrigeration, in particular to a laser refrigerator and a laser refrigeration method. Background technique [0002] With the gradual emergence of the importance of semiconductor refrigeration technology in aerospace, biomedicine and other fields, semiconductor refrigeration technology has gradually become the focus of research and development. The traditional refrigeration method is mainly thermoelectric refrigeration, that is, the method of using the Peltier effect to realize refrigeration. Compared with traditional refrigeration methods, laser refrigeration has no mechanical vibration, no magnetic field and electric field, all optical properties, no mechanical equipment and refrigerant participation in the working process. It is an ideal refrigeration solution and is suitable for many special fields. Especially in some special military fields, traditional refrigeration methods are diffic...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a laser refrigerator and a laser refrigeration method for the relatively complicated production process of existing laser refrigerators.

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