Chinese Optics Letters, 2012, 10 (11): 111401, Published Online: Aug. 3, 2012
Efficient heat transfer in high-power fiber lasers Download: 1051次
140.3510 Lasers, fiber 140.6810 Thermal effects 140.3615 Lasers, ytterbium 060.2320 Fiber optics amplifiers and oscillators
Abstract
The maximum output power offiber lasers limited by the thermal degradation of double-clad fiber coatings is theoretically simulated. We investigated the thermal effects on high-power continuous wave (CW) fiber lasers with a focus on heating at the splice joints as well as on the doped fiber caused by quantum defects. Whether thermal interface materials are used or not, the thermal contact resistances between the fiber and its heat sink are measured separately while using different cooling equipments. Though the thermal management of splices is more difficult than that of active fibers, a temperature increase of 0.019 K/W is obtained for a splice joint into which the pump light launches. The splice joint sustains 3 kW of total passing power.
Yuanyuan Fan, Bing He, Jun Zhou1, 2 Jituo, Shoujun Dai, Chun Zhao, Yunrong Wei, Qihong Lou. Efficient heat transfer in high-power fiber lasers[J]. Chinese Optics Letters, 2012, 10(11): 111401.