High-precision and wide-range optical crystal temperature control system

Jun-cao ZHU; Zi-wen DOU; Jia-qiang LI; Xiao-ming XU

doi:10.3788/OPE.20182607.1604

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High-precision and wide-range optical crystal temperature control system

Modern Applied Optics | 更新时间：2020-08-13

- High-precision and wide-range optical crystal temperature control system
- Optics and Precision Engineering Vol. 26, Issue 7, Pages: 1604-1611(2018)
- 作者机构：
  
  1.天津理工大学电气电子工程学院天津市复杂系统控制理论及应用重点实验室, 天津 300384
  2.核工业理化工程研究院, 天津 300180
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182607.1604
  CLC： TN244
- Received：11 December 2017，
  
  Accepted：18 January 2018，
  
  Published：25 July 2018
- 稿件说明：
移动端阅览
Jun-cao ZHU, Zi-wen DOU, Jia-qiang LI, et al. High-precision and wide-range optical crystal temperature control system[J]. Optics and precision engineering, 2018, 26(7): 1604-1611.
DOI：

Jun-cao ZHU, Zi-wen DOU, Jia-qiang LI, et al. High-precision and wide-range optical crystal temperature control system[J]. Optics and precision engineering, 2018, 26(7): 1604-1611. DOI： 10.3788/OPE.20182607.1604.

摘要

为解决固体激光器工作时光学晶体产生的热沉积问题，保证其工作性能稳定，提出了一种基于半导体制冷器（TEC）的高控温精度、大控温范围光学晶体温度控制方案。分析了TEC的工作特性和光学晶体的热效应与传热机理，将TEC工作过程中自身温度变化引起的电气特性改变与光学晶体温度的变化同时纳入控制环节，建立了温度-电流双闭环温度控制模型，设计并完成了一套高控温精度、大控温范围的光学晶体温度控制系统。实验结果表明：本系统在-15~120℃的温度控制范围内，可以迅速稳定在任一设定的温度点，其控温精度优于±0.002℃；当设定温度和实际温度之间的偏差在20℃以内时，其收敛稳定时间小于60 s，可以满足固体激光器中光学晶体对控温范围与精度的要求。

Abstract

To address the problem of heat accumulation of optical crystals in solid-state lasers and ensure the stability of its work performance

a temperature-control method with high temperature control accuracy and large temperature control range

based on a semiconductor Thermoelectric Cooler (TEC)

was proposed. Based on the operating characteristics of the TEC

the heat effect and the heat transfer mechanism of the optical crystal

a temperature-current double closed-loop temperature control model was established. The proposed model controls both the electrical characteristic variations of the working TEC and the temperature variations of the optical crystal. A high-precision and wide-range optical crystal thermostat control system was designed and implemented. Experimental results demonstrate that the overall temperature control accuracy of the proposed system is better than ±0.002℃

and the system can quickly stabilize at any set point temperature in a wide temperature range of -15-120℃

when the set temperature and the actual temperature deviate 20℃

a stable convergence time of less than 60 s

which meets the requirements of solid-state laser optical crystal for temperature range and accuracy.

关键词

Keywords

references

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