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

Direct liquid-cooled array thin-film unstable resonator capable of suppressing high-order distortion in the cavity

A resonant cavity and array technology, applied in laser cooling devices, laser parts, lasers, etc., can solve the problems of complex aberration components, affecting laser transmission, and difficulty in obtaining an ideal laminar flow state, achieving effective thermal management, High beam quality, simple structure effect

Active Publication Date: 2021-06-15
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for direct liquid-cooled lasers, since the laser needs to pass through the flowing liquid, the flow field of the liquid will affect the laser transmission
In actual design, limited by the accuracy of processing and assembly, it is difficult to obtain the ideal laminar flow state in the flow state of the liquid. The flow state in a single flow channel (directly affecting the heat distribution) usually has a certain spatial domain and The high-frequency components in the time domain, through the superposition of dozens or hundreds of flow channels, the aberration components will become extremely complex

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
  • Direct liquid-cooled array thin-film unstable resonator capable of suppressing high-order distortion in the cavity
  • Direct liquid-cooled array thin-film unstable resonator capable of suppressing high-order distortion in the cavity
  • Direct liquid-cooled array thin-film unstable resonator capable of suppressing high-order distortion in the cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment discloses a direct liquid-cooled array thin slice unstable resonator that can suppress high-order distortion in the cavity, including a direct liquid-cooled array distributed gain module 1, a resonant cavity mirror, a 4f imaging system, and a high-order distortion suppression system and pumping system. The components, structure and functions of each system are as follows:

[0034] Direct liquid-cooled array distributed gain module (hereinafter referred to as gain module): used to generate laser gain. It includes several sheet-type gain media and laser cooling liquid; the core structure is an array of several sheet-type gain media, and micro-channels are formed between adjacent gain media, and the laser cooling liquid flows through the micro-channels, and at the same time, Cool down the gain sheet.

[0035] Pumping system: used to inject pumping light D2 into the gain module 1, so that the gain sheet realizes population inversion to obtain laser gain. ...

Embodiment 2

[0041] This embodiment discloses the structure of the direct liquid cooling array distributed gain module (hereinafter referred to as the gain module). Such as image 3 As shown, the gain module 1 includes a number of composite crystals (i.e. gain media) arranged in an array, and the composite crystals are fixedly stacked in the module inner frame 20 through the crystal fixing strip 16, and the adjacent composite crystals are separated by flow channel separators 22 In order to form a flat microfluidic channel, the module inner frame 20 is fixed in the module outer frame 13, there is a gap between the module inner frame 20 and the outer frame 13, and the opposite sides of the module outer frame 13 are provided with light-through windows 14 for transmitting the laser light D1 and The pumping light D2 and the laser cooling liquid 21 flow into the flat micro-channel formed between the crystals and the gap between the inner and outer frames and the gap between the inner and outer f...

Embodiment 3

[0044] This embodiment discloses the structure of the pumping system. The pumping system includes at least one set of pumping coupling system, and the pumping coupling system includes a matched pumping light source 10 and a dichroic beamsplitter 11, the dichroic beamsplitter reflects the pump light D2 and transmits the laser D1, and the dichromatic beamsplitter 11 will The pumping light D2 output by the pumping light source 10 is reflected into the gain module 1, and the large-facet-end pumping method is adopted. The pump light source 10 may be one of a diode array, a diode pigtail output light source, and a flash light source. In one embodiment, there are two sets of pump coupling systems, which are respectively arranged on both sides of the gain module 1 .

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 direct liquid-cooled array thin slice unstable resonant cavity capable of suppressing high-order distortion in the cavity. Volume Bragg grating and pumping system. Aiming at the drawbacks of direct liquid-cooled direct liquid-cooled array thin-plate laser devices that are more high-order distortions caused by liquid flow, resulting in poor beam quality, the invention innovatively proposes to change the structure of the unstable cavity and introduce a 4f system into the cavity, In the cavity, a combination of diaphragm and reflective Bragg grating is used to suppress high-order wavefront distortion, so as to obtain high-beam quality laser output. The laser device of the present invention can not only effectively solve the problem of thermal management of solid-state lasers, but also realize high-beam-quality laser output, and is a new type of high-power laser device.

Description

technical field [0001] The invention relates to the technical field of high-energy lasers, and provides a laser output device, in particular a direct liquid-cooled array thin-slice laser unstable resonant cavity capable of suppressing high-order distortion in the cavity. Background technique [0002] High average power all-solid-state lasers play an important role in frontier scientific research, national economy, national security and other fields, and are research hotspots and important directions in the laser field. The severe thermal effect caused by the increase of laser power has become the core problem that limits the high average power and high beam quality laser output of all solid-state lasers. Direct liquid cooling is an effective thermal management method. For example, US Patent No. US7366211B2 discloses a laser directly cooled by liquid, which is implemented by arranging multiple gain media in an array to form a gain module. The method reduces the gain of the m...

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 Patents(China)
IPC IPC(8): H01S3/04H01S3/042H01S3/081
CPCH01S3/0407H01S3/042H01S3/08081
Inventor 易家玉阮旭胡浩涂波曹海霞高清松唐淳
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS