Savvidis PG, Baumberg JJ, Stevenson RM, Skolnick MS, Whittaker DM, Roberts JS
Department of Physics & Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom.
Phys Rev Lett. 2000 Feb 14;84(7):1547-50. doi: 10.1103/PhysRevLett.84.1547.
We experimentally demonstrate resonant coupling between photons and excitons in microcavities which can efficiently generate enormous single-pass optical gains approaching 100. This new parametric phenomenon appears as a sharp angular resonance of the incoming pump beam, at which the moving excitonic polaritons undergo very large changes in momentum. Ultrafast stimulated scattering is clearly identified from the exponential dependence on pump intensity. This device utilizes boson amplification induced by stimulated energy relaxation.
我们通过实验证明了微腔中光子与激子之间的共振耦合，这种耦合能够高效地产生接近100的巨大单通光学增益。这种新的参量现象表现为入射泵浦光束的尖锐角共振，在该共振处移动的激子极化激元的动量会发生非常大的变化。从对泵浦强度的指数依赖关系中可以清楚地识别出超快受激散射。该器件利用了受激能量弛豫引起的玻色子放大。
