千瓦级传导冷却半导体激光器阵列热特性
发布时间：2018-10-20 18:24
【摘要】：随着半导体激光器输出功率的进一步提高,热管理已经成为制约其性能和可靠性的关键瓶颈之一。利用有限元方法对千瓦级高功率传导冷却型(G-Stack)半导体激光器阵列的热特性进行数值模拟与分析。结果表明工作脉宽大于250μs时器件各发光单元之间会发生严重的热串扰现象。在横向及垂直方向的热量分别为64.7%与35.3%,横向方向热阻的74.9%及垂直方向热阻的66.5%来自CuW,表明CuW对于激光器的散热性能有着决定性的影响。实验测试了器件在不同占空比条件下的光谱特性,得到工作频率分别为20、30、40 Hz相对50 Hz的温差分别为2.33、1.56、0.78℃,根据累积平均温度法计算得到的温差分别为2.13,1.47,0.75℃,理论模拟结果相对于实验结果的平均误差小于6.85%,结果表明理论模拟结果和实验瞬态热阻基本吻合。
[Abstract]:With the further improvement of the output power of semiconductor lasers, thermal management has become one of the key bottlenecks restricting the performance and reliability of semiconductor lasers. The thermal characteristics of a kilowatt high power conducting cooling (G-Stack) semiconductor laser array are numerically simulated and analyzed by finite element method (FEM). The results show that when the working pulse width is larger than 250 渭 s, serious thermal crosstalk will occur among the various luminescent cells. The heat in the transverse and vertical directions is 64.7% and 35.3.The thermal resistance in the transverse direction is 74.9% and the thermal resistance in the vertical direction is 66.5% from CuW,. The results show that CuW has a decisive effect on the heat dissipation performance of the laser. The spectral characteristics of the device under different duty cycle conditions have been experimentally tested. The temperature difference of the operating frequency of 20 ~ 30 ~ 40 Hz to 50 Hz is 2.33 ~ 1.56 ~ 0.78 鈩，
本文编号：2284007
[Abstract]:With the further improvement of the output power of semiconductor lasers, thermal management has become one of the key bottlenecks restricting the performance and reliability of semiconductor lasers. The thermal characteristics of a kilowatt high power conducting cooling (G-Stack) semiconductor laser array are numerically simulated and analyzed by finite element method (FEM). The results show that when the working pulse width is larger than 250 渭 s, serious thermal crosstalk will occur among the various luminescent cells. The heat in the transverse and vertical directions is 64.7% and 35.3.The thermal resistance in the transverse direction is 74.9% and the thermal resistance in the vertical direction is 66.5% from CuW,. The results show that CuW has a decisive effect on the heat dissipation performance of the laser. The spectral characteristics of the device under different duty cycle conditions have been experimentally tested. The temperature difference of the operating frequency of 20 ~ 30 ~ 40 Hz to 50 Hz is 2.33 ~ 1.56 ~ 0.78 鈩，
本文编号：2284007
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