Spatial dynamics, thermalization, and gain clamping in a photon condensate
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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 spatial hole burning and multimode condensation. This opens the possibility of engineering the gain profile to control the condensate structure.
Keeling , J & Kirton , P 2016 , ' Spatial dynamics, thermalization, and gain clamping in a photon condensate ' Physical Review. A, Atomic, molecular, and optical physics , vol 93 , no. 1 , 013829 . DOI: 10.1103/PhysRevA.93.013829
Physical Review. A, Atomic, molecular, and optical physics
© 2016 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: http://dx.doi.org/10.1103/PhysRevA.93.013829