Solid laser with low power consumption

A solid-state laser, low-power technology, used in semiconductor lasers, lasers, semiconductor laser devices, etc., can solve the problems of reducing the efficiency of the plug of the whole machine and reducing the working stability.

Inactive Publication Date: 2012-08-15
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The present invention mainly aims at the technical bottleneck that the working stability of the solid-state laser pumped by the existing LD array decreases when the temperature changes, and the use of the TEC refrigeration device greatly reduces the plug efficiency of t

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Embodiment Construction

[0012] The present invention is provided with:

[0013] The detailed description will be given below in conjunction with the accompanying drawings and specific examples, but the protection scope of the present invention should not be limited thereby.

[0014] Taking Nd:YAG crystal laser as an example, the idea of ​​the present invention will be described in detail. The composition of the LD array (3 groups in total):

[0015] 5 with a central wavelength of 806nm (working temperature 25°C)

[0016] 5 with a central wavelength of 807nm (working temperature 25°C)

[0017] 5 with a central wavelength of 808nm (working temperature 25°C)

[0018] 5 with a central wavelength of 809nm (working temperature 25°C)

[0019] Center wavelength 810nm 5 (working temperature 25 ℃)

[0020] Laser crystal: rod-shaped Nd:YAG crystal (crystal diameter d=0.4cm, crystal length L=8cm)

[0021] Resonant cavity: total reflection mirror (HR1064nm, R>99.9%)

[0022] Output mirror (T=40%1064nm)

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Abstract

A multi-wavelength LD (laser diode) array pumped solid laser with low power consumption and a wide temperature operating range relates to a laser, in particular to a laser without water-cooling and with the wide temperature operating range. The laser is capable of stably working within the wide temperature range while complete machine plug efficiency is effectively improved. Bars with different working center wavelengths are selected according to required operating temperature range and by referring to different absorption coefficients of laser crystals on light different in wavelength to form a multi-wavelength LD array by arraying according to optimal light field distribution principle. The Nd:YAG laser capable of stably working within the temperature range of 10-40 DEG C is designed, and the structural model of the laser is shown in figures. The plug efficiency of the laser can also be effectively improved. A method has the advantages of stability, energy saving, convenience and the like, and is applicable to laser research. The laser can be applied to the field of military, national defense, space technology, laser detection and the like.

Description

technical field [0001] The invention relates to a solid-state laser, in particular to a wide-temperature working range pumped by a multi-wavelength LD array and a low-power solid-state laser. Background technique [0002] The solid-state laser pumped by the LD array has the advantages of high efficiency, compact structure, and long life, and is widely used in military defense, aerospace technology, laser detection and other fields. In order to reduce and alleviate the thermal effect of laser crystals, two cooling methods, water cooling or TEC cooling, are often used. The water-cooled laser is too bulky and inconvenient to carry because of the cooling water tank. In contrast, the water-free laser eliminates the need for a cooling water tank, and the TEC refrigeration device has the advantages of small size, easy to carry, etc., and can work in harsh environments, so it is more suitable for aerospace, military and other applications. [0003] Scholars at home and abroad have...

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Application Information

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IPC IPC(8): H01S5/40H01S5/024
Inventor 金光勇陈薪羽吴春婷王超于永吉孙建楠
Owner CHANGCHUN UNIV OF SCI & TECH
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