外腔可调谐激光器的有限元分析及结构优化

摘要

On the basis of the temperature field distribution features and thermal deformation mechanism of the external cavity tunable lasers obtained by using the finite element analysis method,this paper proposes an optimized optical bench structure and theoretically analyzes and numerically simulates its heat dissipation and thermal deformation in order to decrease the effects of the ambient temperature variations on their wavelength stabilization.The results show that the optimized structure has effi-cient heat transfer property and significantly reduces the effect of thermal deformation on the cavity length,thereby improving the wavelength stability of the lasers at different operating temperatures.%为了降低环境温度变化对外腔可调谐激光器波长稳定性的影响，采用有限元分析方法得出了外腔可调谐激光器的温度场分布特点和热变形机理，提出了一种优化的光具座结构，并对优化结构的散热性能和热变形进行了理论分析和数值模拟。结果表明，该优化的光具座结构具有高效的传热性能，大幅降低了热变形对腔长的影响，从而提高了激光器的在不同工作环境温度下的波长稳定性。