Thermal analysis of rectangular Nd:GGG heat capacity lasers
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Received Date:
2010-07-27
Accepted Date:
2010-09-01
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Abstract
In order to study the thermal effect of rectangular Nd:GGG heat capacity laser crystal, the semianalytical analysis of thermal conductive anisotropic material was introduced. Through the analysis of working characteristic of laser crystal, thermal model according to actual working state was established, thermal effect of a rectangular Nd:GGG crystal was investigated and the expressions of temperature field inside laser crystal in the pump stage and cooling stage were obtained. The effect of width and thickness of the crystal on temperature field was analyzed quantitatively. Results show that a maximum temperature rise of 169.1℃ is obtained in the center of the pump surface after LD-pumped for 4s with an output power of 8100W and a pulse frequency of 500Hz and a pulse width of 0.2ms. The maximum temperature rise decreases to 0.97% 120s later after the pumping stops. The results can offer theoretical basis for the optimization design of heat capacity lasers.
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References
|
[1]
|
LI X Q,DOU Zh G,LI Q,et al.The study status of new lasers and it s applications[J].Journal of the Academy of Equipment Command Technology,2008,19(6):95-99(in Chinese). |
|
[2]
|
WANG B S,JIANG H H,ZHANG Q L,et al.Analysis on the temperature field of LD array pumped Nd:GGG disc laser in heat-capacity mode[J].Chinese Journal of Quantum Electronics,2007,24(6):688-693(in Chinese). |
|
[3]
|
DONG W W,LI L,SHI P,et al.Thermal effect of Nd:GdVO4 crystal end-pumped by fiber coupled diode laser[J].Laser Technology,2009,33(6):633-637(in Chinese). |
|
[4]
|
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). |
|
[5]
|
ZHENG X F,SHI P,LIU W,et al.Thermal effect of Nd:GdVO4 crystal pumped by variable radius by LD[J].Laser Technology,2008,32(6):642-644(in Chinese). |
|
[6]
|
HU H,CAI Zh,JIANG J F.Numerical simulation of thermodynamics in cooling for heat capacity laser[J].Chinese Journal of Lasers,2007,34(11):1507-1511(in Chinese). |
|
[7]
|
SHI P,CHEN W,LI L,et al.Semianalytical thermal analysis on a Nd:YVO4 crystal[J].Applied Optics,2007,46(19):4046-4061. |
|
[8]
|
SHI P,CHEN W,LI L,et al.Semianalytical thermal analysis of thermal focal length on Nd:YAG rods[J].Applied Optics,2007,46(26):6655-6661. |
|
[9]
|
SABAEIAN M,NADGARAN H,MOUSAVE C.Anacyticac socution of the heat equation in a congitudinaccy pumped cubic socid-state caser[J].Applied Optics,2008,47(13):2317-2325. |
|
[10]
|
SHI P,LI J P,CHEN W,et al.Thermal effect of Nd:GdYO4 cube microchip laser with back surface cooling[J].Chinese Journal of Lasers,2009,36(7):1772-1776(in Chinese). |
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