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Quick-start intermediate infrared laser

A fast-start, laser technology, applied in the field of lasers, can solve the problems of complex structure and low degree of integration, and achieve the effect of overcoming complex structure

Active Publication Date: 2021-09-28
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The quick-start mid-infrared laser provided by the present invention uses the ambient temperature data fed back by the temperature sensor in real time, quickly analyzes the temperature data through the single-chip microcomputer to match the crystal period and sends a modulation signal to the stepper motor driver, and the stepper motor accurately rotates the wheel, Make the parametric frequency conversion crystal whose polarization period matches the measured temperature reach the accurate spatial position, and then quickly output the 3.8μm mid-infrared laser, which solves the problems of complex structure and low integration level of the current fast-start mid-infrared laser

Method used

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Embodiment Construction

[0035] Hereinafter, exemplary embodiments of embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for clarity, parts not related to describing the exemplary embodiments are omitted in the drawings.

[0036] In the embodiments of the present disclosure, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in this specification, and are not intended to The possibility that one or more other features, numbers, steps, acts, parts, parts or combinations thereof exist or be added is excluded.

[0037] In addition, it should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Embodiments of the present disclosure will be des...

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Abstract

The invention provides a quick-start intermediate infrared laser. A 808nm semiconductor laser, an energy transmitting optical fiber, a first focus lens, a second focus lens, a 1064nm pumping light total reflective mirror, an Nd: YVO4 crystal, a 1064nm pumping light output mirror, a third focus lens, a first 45-degree beam splitter, a crystal bearing wheel disc and a second 45-degree beam splitter are sequentially arranged in a straight cavity of the laser from left to right; a third 45-degree beam splitter and a fourth 45-degree beam splitter are placed in a zigzag cavity; a single-chip microcomputer is connected with a temperature sensor and a stepping motor; and the stepping motor is connected with the single-chip microcomputer and the crystal bearing wheel disc.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a fast-start mid-infrared laser. Background technique [0002] The 3.8 μm mid-infrared laser is an important atmospheric projection window band. Lasers in this band are widely used in military and civilian fields such as spectral analysis, medical diagnosis, remote sensing detection, and photoelectric countermeasures. The 3.8 μm mid-infrared laser has become one of the current research priorities. [0003] In the field of solid-state lasers, commonly used laser crystals include neodymium-doped yttrium aluminum garnet (Nd:YAG) and neodymium-doped yttrium vanadate (Nd:YVO4), commonly used parametric frequency conversion crystals include periodically poled lithium niobate (PPLN) and Lithium triborate (LBO). [0004] At present, traditional mid-infrared lasers often need a period of warm-up time when they are started. Although the start-up time of lasers varies according to different systems, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/108H01S3/13
CPCH01S3/1083H01S3/1305
Inventor 于永吉王宇恒金光勇王超王子健吴春婷
Owner CHANGCHUN UNIV OF SCI & TECH
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