High-power fiber laser modular heat management device capable of realizing spatiotemporal modulation of temperature distribution

A fiber laser and temperature distribution technology, applied in the field of lasers, can solve the problems of water-cooled cooling power and high cooling efficiency, and achieve the effect of isolating heat transmission

Pending Publication Date: 2020-02-21
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Compared with the above two methods, the cooling power and cooling efficiency of water cooling are high, and it is suitable for high-power fiber lasers. At the same time, the design of the water cooling plate is flexible, and the temperature control can be easily realized by adjusting the water temperature. However, there is still a lack of one that can A technical solution to achieve continuous temperature modulation along the fiber direction under high power conditions

Method used

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  • High-power fiber laser modular heat management device capable of realizing spatiotemporal modulation of temperature distribution
  • High-power fiber laser modular heat management device capable of realizing spatiotemporal modulation of temperature distribution
  • High-power fiber laser modular heat management device capable of realizing spatiotemporal modulation of temperature distribution

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Embodiment 1

[0033] A modular thermal management device for high-power fiber lasers whose temperature distribution can be controlled spatiotemporally. Its structure is shown as figure 1 As shown, it includes a modular water-cooling plate 1, a control module 2, a control bus 3, a data bus 4, and a water temperature rapid regulation module 5: the control module 2 is connected to the control bus 3 and the data bus 4, and the water temperature rapid regulation module 5 is composed of multiple The cold water electronic flow valve 51 and the hot water electronic flow valve 52 corresponding to the thermostat 2 are composed, the control bus 3 is respectively connected to the cold water electronic flow valve 51 and the hot water electronic flow valve 52 of the water temperature rapid regulation module 5, and the data bus 4 is respectively connected to each The temperature sensor 116 on the optical fiber temperature regulating part. The cold water electronic flow valve 51 is connected to the cold wa...

Embodiment 2

[0037] A thermal management method for realizing the time-space modulation of the temperature distribution of high-power lasers, which uses the high-power fiber laser modular thermal management device whose temperature distribution can be time-space-controlled in the above-mentioned embodiment 1. The specific method process is as follows. First, each temperature module 11 set temperature T i The fitting is obtained, with Figure 6 It is the temperature fitting curve of the water cooling plate in a certain embodiment, the abscissa is the number of optical fiber temperature adjustment parts, unit: piece, the ordinate is the temperature, unit: °C, the temperature curve is divided into 28 intervals, representing 28 optical fiber temperature adjustment parts Temperature parts, preferably, take the median T of the temperature distribution in each interval i (i=1,2...28) as the set temperature of the corresponding optical fiber temperature adjustment parts (such as Figure 6 As sho...

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Abstract

The invention provides a high-power fiber laser modular heat management device capable of realizing spatiotemporal modulation of temperature distribution. The high-power optical fiber laser modular heat management device comprises a modular water cooling disc (1), a control module (2), a control bus (3), a data bus (4) and a temperature rapid regulation and control module (5). The modular water cooling disc (1) comprises a plurality of optical fiber temperature adjusting pieces (11) for adjusting the temperature of high-power laser optical fibers fixed thereto to be within a specified norm value or range. The number of the temperature rapid regulation and control modules (5) is the same as that of the optical fiber temperature adjusting pieces (11), and the temperature rapid regulation andcontrol modules are in one-to-one correspondence connection with the optical fiber temperature adjusting pieces (11). The control module (2) is connected with the plurality of temperature rapid regulation and control modules (5) through the control bus (3); and the control module (2) is connected with the optical fiber temperature adjusting pieces (11) through the data bus (4) and is used for acquiring temperature data of the optical fiber temperature adjusting piece (11) so as to form an adjusting and controlling instruction for controlling the temperature rapid regulation and control modules (5).

Description

technical field [0001] The present invention generally relates to the technical field of lasers, in particular to a high-power fiber laser modular heat management device whose temperature distribution can be controlled in time and space. Background technique [0002] Due to the small cross-section of the fiber core and long operating distance of high-power single-mode fiber lasers, stimulated Brillouin scattering effect is prone to occur during operation, which has become the main limiting factor for the power improvement of narrow-linewidth fiber lasers and amplifiers. At present, the main ways to suppress the stimulated Brillouin scattering (SBS) effect are to change the shape of the fiber, the doping concentration of the fiber, or the temperature distribution of the fiber. Among them, temperature regulation along the fiber is a simple and effective means to suppress the SBS effect. However, the current main technical solution is to achieve local temperature control by loc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/04H01S3/042
CPCH01S3/0407H01S3/042
Inventor 韩凯崔文达娄兆凯李霄杜少军奚小明王小林陈敏孙刘昊
Owner NAT UNIV OF DEFENSE TECH
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