Photon thermalization and a condensation phase transition in an electrically pumped semiconductor microresonator.
Photon thermalization and a condensation phase transition in an electrically pumped semiconductor microresonator.
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DOI：
10.1364/oe.409344
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发表时间：
2019-12
期刊：
影响因子：
3.8
通讯作者：
S. Barland;P. Azam;G. Lippi;R. Nyman;R. Kaiser
中科院分区：
文献类型：
--
作者：
S. Barland;P. Azam;G. Lippi;R. Nyman;R. Kaiser
本文报道了半导体微谐振器中弱耦合光子热化和凝聚的实验研究。我们测量了单波长宽腔中光的色散关系和光子质量。所观察到的发光光谱与室温下的热平衡分布是相容的。相变，确定在高能量和超线性增加的占领在低能量的人口饱和，发生时的相空间密度是为了统一。我们解释我们的观察玻色爱因斯坦凝聚的光子与粒子库平衡，并讨论与激光发射的关系。
We report on an experimental study of photon thermalization and condensation in a semiconductor microresonator in the weak-coupling regime. We measure the dispersion relation of light and the photon mass in a single-wavelength, broad-area resonator. The observed luminescence spectrum is compatible with a room-temperature, thermal-equilibrium distribution. A phase transition, identified by a saturation of the population at high energies and a superlinear increase of the occupation at low energy, takes place when the phase-space density is of order unity. We explain our observations by Bose-Einstein condensation of photons in equilibrium with a particle reservoir and discuss the relation with laser emission.