Wu Yeheng, Singer Kenneth D, Petschek Rolfe G, Song Hyunmin, Baer Eric, Hiltner Anne
Department of Physics, Case Western Reserve University, Cleveland, OH 44106, USA.
Opt Express. 2009 Sep 28;17(20):18038-43. doi: 10.1364/OE.17.018038.
We have investigated the formation of in-bandgap delocalized modes due to random lattice disorder as determined from the longitudinal mode spacing in a distributed Bragg laser. We were able to measure the penetration depth, and from transfer matrix simulations, determine how the localization length is altered for disordered lattices. Transfer matrix simulations and studies of the ensemble average were able to connect the gap delocalized modes to localized modes outside of the gap as expected from consideration of Anderson localization, as well as identify the controlling parameters.
我们研究了由于分布式布拉格激光器中的纵向模式间距所确定的随机晶格无序导致的带隙内离域模式的形成。我们能够测量穿透深度，并通过转移矩阵模拟确定无序晶格的局域长度是如何改变的。转移矩阵模拟和系综平均研究能够将带隙离域模式与带隙外的局域模式联系起来，这正如从安德森局域化的考虑所预期的那样，同时还能确定控制参数。
