This work is supported by a DARPA Young Faculty Award (HR0011-08-1-0065) and from National Science Foundation (NSF) under grant 0925992.
Wave guides -- Research, Lasers
We investigate numerically and analytically the effects of gain saturation on the propagation of the fundamental mode in a gain-guided index-antiguided slab waveguide. The propagating mode adapts to gain saturation by becoming less confined, while at the same time its peak intensity increases more slowly. At steady state, both the mode shape and the power remain constant.
Tsing-Hua Her, Xianyu Ao, and Lee W. Casperson, "Gain saturation in gain-guided slab waveguides with large-index antiguiding," Opt. Lett. 34, 2411-2413 (2009).