标题： 光子局域激光 显示英文标题

标题： Photon localization laser

摘要： 我们通过光子局域化在随机放大分层介质中展示了低阈值随机激光。 激光是由泵浦激光波长处的局域模式的共振激发促进的，这些模式在样品深处具有显著增强的强度。 发射进入与局域增益区域重叠的长寿命局域模式。 这种机制克服了扩散型随机激光器中降低激光阈值的基本障碍，其中多重散射将激发区域限制在样品表面附近。 显示英文摘要

摘要： We demonstrate low-threshold random lasing in random amplifying layered medium via photon localization. Lasing is facilitated by resonant excitation of localized modes at the pump laser wavelength, which are peaked deep within the sample with greatly enhanced intensity. Emission occurs into long-lived localized modes overlapping the localized gain region. This mechanism overcomes a fundamental barrier to reducing lasing thresholds in diffusive random lasers, in which multiple scattering restricts the excitation region to the proximity of the sample surface.