标题： 光子凝聚态中的空间动力学、热化和增益钳制 显示英文标题

标题： Spatial dynamics, thermalization, and gain clamping in a photon condensate

摘要： 我们从理论上研究了泵浦光斑尺寸和位置对光子凝聚态的影响。 通过探索非均匀分子激发分数，我们明确了光子凝聚态中空间平衡、增益钳制和热化之间的关系。 这为理解一些最近的实验结果提供了简单的思路。 我们发现，当热化被破坏时，增益钳制不完善，导致“横向空间空洞烧蚀”和多模凝聚。 这为工程化设计增益剖面以控制凝聚态结构提供了可能。 显示英文摘要

摘要： We study theoretically the effects of pump-spot size and location on photon condensates. By exploring the inhomogeneous molecular excitation fraction, we make clear the relation between spatial equilibration, gain clamping and thermalization in a photon condensate. This provides a simple understanding of several recent experimental results. We find that as thermalization breaks down, gain clamping is imperfect, leading to "transverse spatial hole burning" and multimode condensation. This opens the possibility of engineering the gain profile to control the condensate structure.