利用有限元软件ANSYS结合傅里叶定律，对制约适用于光纤耦合输出的新型高功率多有源区隧道再生半导体激光器长寿命工作的稳态热特性进行了系统计算、分析。获得了这种新型器件工作时各有源区温度分布特征及与传统单有源区器件稳态热特性的区别，并给出了多有源区隧道再生半导体激光器工作时各有源区温度的估算方法，同时对有效降低这种新型器件热阻的方法进行了讨论。结果表明:连续工作时，多有源区隧道再生半导体激光器比同材料体系传统结构器件更易获得较高的输出功率。

The multi-active zone tunnel regeneration semiconductor laser can fully use the transmission capability of multi-mode optical fiber, but its steady-state thermal property is unclear and limits its applications in high power area. The steady-state thermal property of the laser is studied with ANSYS and Fourier’s theorem, and temperature profiles of the active zones are obtained. An estimation method of active zone’s temperature and the way to reduce the laser’s thermal resistance are presented. Calculation results show that the multi-active zone tunnel regeneration semiconductor laser can reach higher power than the single-active zone semiconductor laser in CW mode.