Photon noise in a random laser amplifier with fluctuating properties
arXiv:0904.3696 · doi:10.1103/PhysRevA.79.063822
Abstract
We study fluctuations of the number of photocounts measured by an ideal photodetector illuminated by light scattered in an amplifying disordered medium, below the threshold for random lasing. We show that the variance of fluctuations and their correlation function carry information about fluctuating properties of the medium. A direct link is established between the fluctuations of the number of photocounts due to the amplified spontaneous emission (ASE) and the dimensionless conductance g of the medium. Our results suggest a possibility of probing amplifying disordered media by analyzing statistics of their ASE, without illuminating them from outside by a probe beam.
14 pages, 9 figures
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Cited by in corpus (5)
- Numerical Study of Amplified Spontaneous Emission and Lasing in Random Media
- Towards a random laser with cold atoms
- Bunching and anti-bunching of localised particles in disordered media
- Transmission of quantum entanglement through a random medium
- Excess-noise suppression for a squeezed state propagating through random amplifying media via wave-front shaping