Troitsk Institute for Innovation and Fusion Research, Troitsk, Moscow region, Russia.
Opt Lett. 2011 Nov 15;36(22):4344-6. doi: 10.1364/OL.36.004344.
The parameters of a diode-laser structure composed of a pair of built-in high-index regions for providing stable, single-spatial-mode operation to high cw powers are numerically found. A three-dimensional numerical code has been implemented that takes into account carrier diffusion in the quantum well and thermal lensing. The laser characteristics are calculated as functions of the above-threshold drive level. Within the simulation, higher-order optical modes on a "frozen background" are computed via the Arnoldi algorithm. Then, for a 6-μm-wide low-index core and 2-3-mm-long devices, stable single-mode operation up to multiwatt-level (2-3 W) cw output power is predicted.
已数值确定了由一对内置高折射率区组成的用于提供稳定、单空间模式操作的二极管激光结构的参数，以实现高连续波功率。已经实现了一个三维数值代码，该代码考虑了量子阱中的载流子扩散和热透镜效应。激光特性被计算为上述阈值驱动水平的函数。在模拟中，通过 Arnoldi 算法计算了“冻结背景”上的高阶光学模式。然后，对于 6μm 宽的低折射率芯和 2-3mm 长的器件，预测可实现稳定的单模操作，直至多瓦特级（2-3W）连续波输出功率。
