通过无序的几何限制实现从非共振到共振随机激光的跃迁
Transition from non-resonant to resonant random lasers by the geometrical confinement of disorder
摘要：
本文报道了随机激光中由发射材料的几何约束引起的一种新的跃迁。具有受控几何形状的不同染料掺杂纸器件通过软光刻制造，并且在受激发射中显示出两种不同的行为：在没有边界约束的情况下，对于较大的激光体积，能量阈值降低，显示出扩散{ \it非共振}随机激光的典型趋势，而当相同的材料被光刻成通道时，壁用作腔，并且观察到标准激光器典型的{ \it谐振}行为。实验结果与随机激光和标准激光的一般理论相一致，并给出了清晰的相变相图。
英文摘要：
We report on a novel kind of transition in random lasers induced by the geometrical confinement of the emitting material. Different dye doped paper devices with controlled geometry are fabricated by soft-lithography and show two distinguished behaviors in the stimulated emission: in the absence of boundary constraints the energy threshold decreases for larger laser volumes showing the typical trend of diffusive {\it non-resonant} random lasers, while when the same material in lithographed into channels, the walls act as cavity and the {\it resonant} behavior typical of standard lasers is observed. The experimental results are consistent with the general theories of random and standard lasers and a clear phase diagram of the transition is reported.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
