Direct liquid cooling high-power laser gain device based on fuel injection pump

A laser gain and high power technology, applied in the direction of laser cooling devices, lasers, laser components, etc., can solve the problems of inability to output high power for a long time, no heat management method, and inability to achieve high average power output, etc., to achieve guaranteed reliability Sustainability, simple matching, compact device effect

Active Publication Date: 2021-03-09
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems in both pumping methods include: (1) pump fuel replenishment, that is, the replenishment of pump fuel cannot be completed quickly and only a single or very few pulses can be used; (2) high average value cannot be achieved Power output, due to the small number of working pulses and no effective heat management method, it is impossible to output high power for a long time

Method used

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  • Direct liquid cooling high-power laser gain device based on fuel injection pump
  • Direct liquid cooling high-power laser gain device based on fuel injection pump
  • Direct liquid cooling high-power laser gain device based on fuel injection pump

Examples

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Effect test

Embodiment 1

[0031] Such as Figure 1-Figure 2 as shown, figure 1 It is a direct liquid-cooled high-power laser gain device pumped by fuel injection. The gain device structure includes: gain medium (1), device inner frame (2), gain medium fixing bracket (3), laser cooling liquid (4), cooling liquid inlet (5), cooling liquid outlet (6), device outer Frame (7), fuel nozzle (8), ignition plug (9), high-speed airflow inlet (10), exhaust gas outlet (11), combustion chamber (12). The laser gain medium (1) is fixedly installed in the inner frame (2) of the device through the gain medium fixing bracket (3), and the gain source of the laser gain medium (1) is the strong light generated by the combustion of liquid or gaseous fuel. A device outer frame (7) is also provided outside the device inner frame (2), and a combustion chamber (12) for fuel combustion is formed between the device inner frame (2) and the device outer frame (7), as figure 2 A cross-sectional view of the laser gain device is s...

Embodiment 2

[0041] This embodiment provides an operation method of a direct liquid-cooled high-power solid-state laser gain device for a fuel injection pump. After starting to work, select and adjust the injection flow value and pressure of one or several fuel nozzles (8), then open the high-speed air inlet (10), fuel nozzle (8), and ignition plug (9) in sequence, and the fuel passes through The fuel nozzle (8) is injected into the combustion chamber (12), and at the same time, the high-speed air or high-speed oxygen flow reaches the combustion chamber (12) through the high-speed airflow inlet (10), and the injected fuel is fully mixed with the high-speed airflow Finally, after being ignited by the ignition plug (9), it continues to burn in the combustion chamber (12), and the intense light emitted by the high-temperature combustion causes the gain medium (1) to achieve upper-level particle population inversion and thus realize high-power laser output.

Embodiment 3

[0043] This embodiment also provides a high-power cavity-stabilized laser based on the gain device of any of the preceding embodiments, such as image 3 shown. The high-power cavity-stabilized laser system includes a gain device (I), and both sides of the gain device (I) are respectively provided with a laser total reflection mirror (14) and a coupling output mirror (13), thereby forming a laser resonant cavity. The gain device (I) is a direct liquid-cooled high-power solid-state laser gain device of the fuel injection pump in any of the foregoing embodiments. After the high-power cavity-stabilized laser starts to work, the high-energy excitation in the gain device (I) The radiation is continuously amplified by the intracavity oscillation of the laser resonator, and then coupled by the output coupling mirror (13) to form an output laser (15).

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Abstract

The invention discloses a direct liquid cooling high-power laser gain device based on a fuel injection pump, which relates to the technical field of high-energy laser. The gain device comprises a gainmedium for acquiring a laser gain, a device inner frame, laser cooling liquid, a cooling liquid inlet, a cooling liquid outlet, a device outer frame, a fuel nozzle for injecting fuel and realizing combustion, an ignition plug, a high-speed airflow inlet, a waste gas exhaust port and a combustion chamber for fuelcombustion. Compared with the prior art, the inner frame and the outer frame of the device are separated, meanwhile, controllable combustion of fuel in the open type combustion cavity can be achieved by designing the proper injection amount, injection angle and ignition time, and the uniformity and strength of optical pumping are guaranteed. On the other hand, the laser gain medium is cooled in a direct liquid cooling mode, effective thermal management is guaranteed, continuous high-power laser output can be achieved, the output laser beam quality is good, and meanwhile the device is compact, small and exquisite and can be used in various application scenes.

Description

technical field [0001] The invention relates to the technical field of high-energy lasers, in particular to a direct liquid-cooled high-power solid-state laser gain device based on a fuel injection pump. Background technique [0002] Since the advent of the first laser in 1960, laser technology (especially high-power laser) has achieved great development. High-power solid-state lasers are widely used in industry, medical treatment, scientific research, national defense and other fields due to their advantages of large output energy, high peak power, high reliability and long service life. At present, the pump source commonly used in high-power lasers is an electric light source, such as a diode array, a flash lamp, and the like. Although electric light source pumping is a relatively convenient method, it has many energy conversion processes and high supporting requirements, especially for high-power laser light sources. Fuel-pumped lasers use the strong light emitted by fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0937H01S3/04H01S3/16
CPCH01S3/0937H01S3/0407H01S3/16
Inventor 唐淳易家玉胡浩涂波阮旭高清松
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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