Intra-cavity pumped low internal heat solid-state laser system

Abstract

The invention provides an intracavity pumping low-internal thermal solid laser system. The intracavity pumping low-internal thermal solid laser system is a low-internal thermal dual-cavity structure solid laser system and comprises a long-wave long-pumping light generation module, a long-wave long-pumping light control module, a laser generation module, a laser adjustment module and a laser outputcontrol module, wherein the long-wave long-pumping light generation module comprises a pumping source, a working medium and a resonant cavity, the pumping source is arranged outside the resonant cavity, the working medium is arranged in the resonant cavity, the long-wave long-pumping light control module I arranged at a long-wave long-pumping light oscillation path in the resonant cavity in the long-wave long-pumping light generation module, the laser generation module is arranged perpendicular to the long-wave long-pumping light generation module and comprises a gain medium and a laser resonant cavity, the laser adjustment module and the gain medium both are arranged at a laser oscillation path in the laser resonant cavity, the laser output control module is also used as a reflecting mirror of the laser resonant cavity, light emitted from the working medium in the long-wave long-pumping light oscillation path directly irradiates a side surface of the gain medium, and the gain mediumpenetrates through the long-wave long-pumping light oscillation path.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to an anti-Stokes fluorescence cooling effect dual-cavity solid-state laser system, in particular to a low internal heat dual-cavity solid-state laser system with high laser power and high beam quality and a compact structure , that is, an intracavity pumped low internal heat solid-state laser system. Background technique [0002] With the continuous advancement of high-energy laser technology, the characteristics of lasers such as average power, pulse energy and beam quality have been continuously improved, and these characteristics have greatly promoted their wide application in precision detection, advanced manufacturing, cutting-edge science and scientific instruments. . Among them, based on the advantages of stable operation and convenient maintenance, solid-state lasers have become the first choice for obtaining high-power, high-beam-quality laser output. However,...

AI Technical Summary

Problems solved by technology

Theoretically, in a conventional laser system, the pump photon wavelength λ P , fluorescence wavelength λ F , output laser wavelength λ L The relationship between λ P F L , in contrast, in the laser system using ASFCE, the wavelength of the fluorescent photon scattered by ASFCE is shorter than the wavelength of the pump photon, that is, λ F P , however, in ASFCE-based laser systems, in practice, the average fluorescence wavelength λ of the entire gain medium is caused by a part of the fluorescence photons being reabsorbed by the gain medium F A redshift occurs, once the redshifted mean fluorescence wavelength λ F greater than the pump photon wavelength λ P , the effect of fluorescent cooling cannot be achieved, and the heat generated can no longer be offset, so that it is impossible to obtain a laser that suppresses the thermal effect

Therefore, in the current anti-Stokes fluorescent refrigeration technology, there are problems of limited pump power and high cost, and the fluorescent refrigeration system based on dual pump light also has the defect of complex structure. Therefore, how to effectively obtain High-power, long-wavelength pump light sources are bottlenecks in this field

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