Thermal analysis of the neodymium-doped microspheres array lasers

DING Jianyong; GUI Luo; PENG Bo; WEI Wei

doi:10.7510/jgjs.issn.1001-3806.2014.01.004

In order to study the thermal effect of the neodymium-doped microsphere array caused by the pumping laser diode array (LDA), a thermal-flow-solid coupling model was established with FLUENT6.3.26 software, and the dependence of the temperature of neodymium-doped microsphere array on its size, fluid velocity, pump frequency and the number of microsphere layers was analyzed by means of finite element analysis. Analysis results show that the laser has short thermal recovery time and the cooling effect has nothing to do with the number of layers. The cooling effect of the microspheres in the small size isn't improved by increasing velocity. The maximum one-way optical path difference of Nd3+microsphere in 2mm and 4mm diameter was 3.1nm and 51.9nm respectively at a repetition rate of 1Hz. The results show that the neodymium-doped microsphere array laser has a highly efficient cooling capacity and is beneficial to the thermal management of a microsphere array laser.

Thermal analysis of the neodymium-doped microspheres array lasers

Corresponding author: WEI Wei, weiwei@njupt.edu.cn

1. School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, China;

2. National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;

3. State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China

Received Date: 2013-04-22

Accepted Date: 2013-05-21

Available Online: 2014-01-25

Abstract: In order to study the thermal effect of the neodymium-doped microsphere array caused by the pumping laser diode array (LDA), a thermal-flow-solid coupling model was established with FLUENT6.3.26 software, and the dependence of the temperature of neodymium-doped microsphere array on its size, fluid velocity, pump frequency and the number of microsphere layers was analyzed by means of finite element analysis. Analysis results show that the laser has short thermal recovery time and the cooling effect has nothing to do with the number of layers. The cooling effect of the microspheres in the small size isn't improved by increasing velocity. The maximum one-way optical path difference of Nd3+microsphere in 2mm and 4mm diameter was 3.1nm and 51.9nm respectively at a repetition rate of 1Hz. The results show that the neodymium-doped microsphere array laser has a highly efficient cooling capacity and is beneficial to the thermal management of a microsphere array laser.

HTML

Reference (14)

[1]	LI L, GAN A Sh, QI B, et al. Thermal effect of LD end-pumped Nd∶YAG crystal with variable thermal conductivity[J]. Laser Technology, 2012, 36(5):612-616(in Chinese).
[2]	PENG Y F, WU D Y, ZHANG Y, et al. Simulation and structure design of a high power laser mirror with self-compensation of thermal distortion[J]. Laser Technology, 2012, 36(1):120-123(in Chinese).
[3]	REN G G. New tactical high energy liquid laser[J]. Laser Technology, 2006, 30(4):418-421(in Chinese).
[4]	TIAN G Zh, OU Q F, ZHONG M, et al. Thermal-management technology for a 2kJ high energy Nd∶glass laser[J]. Laser Technology, 2007, 31(3):253-256(in Chinese).
[5]	GUO J W, LI T, NIU R H, et al. Analysis of the temperature characteristics of a Cr, Tm, Ho∶YAG laser[J]. Laser Technology, 2011, 35(6):761-764(in Chinese).
[6]	LEI Ch Q, WANG Y F, HUANG F, et al. Progress of high power solid-state laser pumping and coupling technology[J]. Laser Technology, 2011, 35(6):725-733(in Chinese).
[7]	MA D D, LIU Q, GONG L, et al. Design an experiment of edge-pumped asymmetric Yb∶YAG/YAG thin disk laser[J]. Laser Technology, 2009, 33(3): 228-228(in Chinese).
[8]	IYAMA K, BHUSHAN R, FURUKAWA H, et al. Development of kW class Nd∶YAG composite ceramic thin disc laser[J].Proceedings of SPIE, 2013, 8599:2801-2807.
[9]	LI L, DONG W W, SHI P, et al. Thermal effect of high power Yb∶YAG microchip solid-state laser[J]. Laser Technology, 2010, 34(1):8-12 (in Chinese).
[10]	PERRY M D, BANKS P S, ZWEIBACK J, et al. Laser containing a distributed gain medium: USA, 6937629[P]. 2005-08-30.
[11]	SHE J B, WEI W, PENG B, et al. Microsphere array laser and its method of thermal management: China, 201210364009.1[P]. 2013-01-09(in Chinese).
[12]	HU T, WEI Y T, SONG Y S, et al. The flow field heat distribution of inorganic liquid laser under oblique pumping[J]. Acta Physica Sinica, 2010, 59(10): 7027-7305.
[13]	WANG M G, XU X J, LU Q S. Influence of liquid flow on laser beam quality in liquid lasers[J]. Chinese Journal of Lasers, 2010, 37(1):131-135(in Chinese).
[14]	WANG P F, MA Z R, LI M, et al. Effect of thermal flow field on the output field distribution of liquid lasers[J]. Laser Technology, 2010, 34(6):861-864(in Chinese).

Thermal analysis of the neodymium-doped microspheres array lasers

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views