Analysis of Thermal Effects in Kilowatt High Power Diamond Raman Lasers

doi:10.3390/cryst12121824

CIOMP OpenIR

	Analysis of Thermal Effects in Kilowatt High Power Diamond Raman Lasers
	Q. X. Gong; M. X. Zhang; C. A. Lin; X. Yang; X. H. Fu; F. Y. Ma; Y. S. Hu; L. Dong and C. X. Shan
	2022
发表期刊	Crystals
卷号	12 期号:12 页码:15
摘要	Chemical vapor deposition (CVD) diamond crystal is considered as an ideal material platform for Raman lasers with both high power and good beam quality due to its excellent Raman and thermal characteristics. With the continuous development of CVD diamond crystal growth technology, diamond Raman lasers (DRLs) have shown significant advantages in achieving wavelength expansion with both high beam quality and high-power operation. However, with the output power of DRLs reaching the kilowatt level, the adverse effect of the thermal impact on the beam quality is progressively worsening. Aiming to enunciate the underlying restrictions of the thermal effects for high-power DRLs (e.g., recently reported 1.2 kW), we here establish a thermal-structural coupling model, based on which the influence of the pump power, cavity structure, and crystal size have been systematically studied. The results show that a symmetrical concentric cavity has less thermal impact on the device than an asymmetrical concentric cavity. Under the ideal heat dissipation condition, the highest temperature rise in the diamond crystal is 23.4 K for an output power of similar to 2.8 kW. The transient simulation further shows that the heating and cooling process of DRLs is almost unaffected by the pump power, and the times to reach a steady state are only 1.5 ms and 2.5 ms, respectively. In addition, it is also found that increasing the curvature radius of the cavity mirror, the length and width of the crystal, or decreasing the thickness of the crystal is beneficial to alleviating the thermal impact of the device. The findings of this work provide some helpful insights into the design of the cavity structure and heat dissipation system of DRLs, which might facilitate their future development towards a higher power.
DOI	10.3390/cryst12121824
URL	查看原文
收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67486
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. X. Gong,M. X. Zhang,C. A. Lin,et al. Analysis of Thermal Effects in Kilowatt High Power Diamond Raman Lasers[J]. Crystals,2022,12(12):15.
APA	Q. X. Gong.,M. X. Zhang.,C. A. Lin.,X. Yang.,X. H. Fu.,...&L. Dong and C. X. Shan.(2022).Analysis of Thermal Effects in Kilowatt High Power Diamond Raman Lasers.Crystals,12(12),15.
MLA	Q. X. Gong,et al."Analysis of Thermal Effects in Kilowatt High Power Diamond Raman Lasers".Crystals 12.12(2022):15.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Analysis of Thermal （4181KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载