Chinese Journal of Quantum Electronics, Volume. 24, Issue 6, 688(2007)
Analysis on the temperature field of LD array pumped Nd∶GGG disc laser in heat-capacity mode
A physical model was established to study the distribution and change of temperature field of Nd∶ GGG disc operated under heat-capacity mode. By using heat conducting equation and Green function,the expressions of temperature field inside the crystal were obtained during the operation and cooling period of the laser;the obtained data reflect the change of temperature filed. The temperature field was calculated after the crystal was pumped as long as 4 s under the pump conditions(rectangular LD facula 3 cm,power 8.1 kW,frequency 500 Hz,width 0.2 ms),and the maximal stress is up to 47% of the crystal rupture limit at the end of 4 s. The cooling time is about 60~70 s when the back of the disc is cooled at the temperature 280 K and 290 K respectively;the cooling time is shorted to be about 30 s when both the back and side of disc were cooled at the temperature 280 K.
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WANG Bao-song, JIANG Hai-he, ZHANG Qing-li, SUN Dun-lu, YIN Shao-tang, LI Lin-feng, TAO Shao-hong. 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
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Received: Jan. 5, 2007
Accepted: --
Published Online: Jun. 7, 2010
The Author Email: Bao-song WANG (wbs6268@yahoo.com.cn)
CSTR:32186.14.