Unlock instant, AI-driven research and patent intelligence for your innovation.

Matching device and matching method of immersion cooling fluid and laser gain medium

A gain medium and matching device technology, applied in the field of lasers, can solve problems such as distortion and loss

Active Publication Date: 2013-08-07
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a good refractive index matching cannot be achieved between the refractive index matching cooling liquid and the solid laser gain medium during the operation of the laser, it will cause serious loss and distortion of the wavefront
Up to now, there is no direct answer to how to realize the refractive index matching under the working conditions of the laser.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Matching device and matching method of immersion cooling fluid and laser gain medium
  • Matching device and matching method of immersion cooling fluid and laser gain medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The material of the solid-state laser medium unit 1 in this embodiment is Nd:YLF (Nd:LiYF 4 ), taking the propagation direction of ordinary light (o-light) in the crystal as the propagation direction of the laser in the gain medium, the refractive index of o-light at room temperature 20°C n s =1.4481, select the mixed solvent of ethyl acetate and liquid paraffin to configure the refractive index matching cooling liquid 2, the refractive indices of the two at room temperature 20°C are 1.3406, 1.4677, respectively, adjust the mixing ratio of the two at room temperature until the mixed solvent refractive index and The refractive index of the solid-state laser medium 1 is the same, and the density of the mixed solvent at this time is measured to be 0.88g / cm 3 , the temperature refractive index coefficient is -11×10 -4 / ℃, the specific heat capacity is 2.4kJ / (kg.K). In this embodiment, the thermal power of the pump light 9 is 10KW, and the flow rate of the re...

Embodiment 2

[0028] Example 2: figure 2 It is a schematic diagram of the principle of Embodiment 2 of the present invention

[0029] First, refractive index premodulation is performed. The material of the solid-state laser dielectric unit 10 in this embodiment is Nd-doped phosphate glass, and the refractive index n at room temperature is 20°C s =1.5386, select the mixed solvent of dibromoethane and tetrabromoethane to configure the refractive index matching cooling liquid 2, the refractive index of the two at room temperature 20 ℃ is 1.5342, 1.6317 respectively, and adjust the mixing ratio of the two at room temperature until the mixed solvent The refractive index is the same as that of solid laser medium 1, and the density of the mixed solvent at this time is measured to be 2.19g / cm 3 , the temperature refractive index coefficient -7×10 -4 / ℃, specific heat capacity 0.72kJ / (kg.K). In this embodiment, the thermal power of the pump light 9 is 4KW, and the flow rate of the refractive in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a matching device and a matching method of immersion cooling fluid and laser gain medium. The matching device comprises the gain medium, refractive-index-matching cooling fluid, a gain medium cavity, a circulating pump, a heat exchanger, an adjustable thermostatic bath, thermostatic fluid and a pump source. Since good refractive index matching between the cooling fluid and solid laser gain medium is kept effectively, loss due to reflection / refraction of each interface between the gain medium and the cooling fluid is restrained. Experiments indicate that loss in reflection or refraction can be reduced to less than 0.02cm<-1>.

Description

technical field [0001] The invention relates to a laser, in particular to a matching device and a matching method for a laser gain medium and an immersion cooling liquid. Background technique [0002] In recent years, a high-power laser technology of direct immersion cooling with matching refractive index has attracted widespread attention at home and abroad. Cooling can achieve high surface area-to-volume ratio to improve heat dissipation efficiency and improve temperature uniformity. At the same time, the matching of refractive index can eliminate the influence of surface distortion generated under thermal stress of solid laser gain medium, and also reduce the influence on the corresponding solid device The processing surface accuracy requirements. This technology is expected to greatly improve the thermal management level of high-power laser systems and increase the thermal load capacity, so it has great practical significance. General Atomics' design, one of two bidder...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/042
Inventor 桂珞范滇元
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI