Single-frequency mid-infrared laser light source

Abstract

The invention relates to a single-frequency mid-infrared laser light source. The single-frequency mid-infrared laser light source comprises a 1,064-nm module, 1,550-nm module, an optical parameter conversion module and a detection feedback module, 1,064-nm pump light output by the 1,064-nm module and 1,550-nm signal light output by the 1,550-nm module are subjected to difference frequency processing through the optical parameter conversion module, 3.4-micrometer mid-infrared laser is output, the detection feedback module receives an optical parameter conversion module output signal, 638-nm red light resolved from the 3.4-micrometer mid-infrared laser serves as a detection signal, the rest 3.4-micrometer mid-infrared laser is filtered and output, the detection feedback module takes a 638-nm red light power change value as a feedback signal which returns to pump sources in the 1,064-nm module and the 1,550-nm module, the output power of the 1,064-nm module and the output power of the 1,550-nm module are adjusted, and it is guaranteed that the 3.4-micrometer mid-infrared laser output by the detection feedback module is stable. Stable mid-infrared single-frequency laser output can be achieved; light source adjustment is quick in response; mid-infrared output with adjustable broadband is achieved.

Description

technical field [0001] The invention relates to a laser technology, in particular to a single-frequency mid-infrared laser light source with stable output. Background technique [0002] Mid-infrared lasers have high transmittance in the atmosphere and low loss, and can be used in satellite communications between satellites and ground. Due to the long transmission distance, the quality requirements for the light beam are very high. However, the current optical parametric devices are all solid-state laser device systems or spatial optical path coupling systems, which are still far from being practical. Contents of the invention [0003] The present invention aims at the problem that the mid-infrared laser has high requirements and cannot be practically used, and proposes a single-frequency mid-infrared laser source, which is a single-frequency mid-infrared laser source with output power detection and feedback control capabilities, so that the mid-infrared laser can be used ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the mid-infrared laser has high requirements and cannot be practically used, and proposes a single-frequency mid-infrared laser source, which is a single-frequency mid-infrared laser source with output power detection and feedback control capabilities, so that the mid-infrared laser can be used for a long time Continuous stable output

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