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Subhertz spectral fluctuations from high-density excitons in coupled quantum wells

V. Negoita, D. Hackworth, D. W. Snoke, K. Eberl
2000 Optics Letters  
Butov et al. [Phys. Rev. Lett. 73, 304 (1994 ] reported large, extremely low-frequency f luctuations in the luminescence intensity from indirect excitons in a coupled quantum well. We have reproduced these f luctuations in a similar structure. Our observations indicate, however, that the f luctuations are spectral f luctuations rather than intensity f luctuations. We have eliminated several possible causes for the f luctuations and propose a possible cause. 
doi:10.1364/ol.25.000572 pmid:18064115 fatcat:pyiz5no7l5ccplqhg44uizblmq