Optical black hole lasers

Faccio, D. , Arane, T., Lamperti, M. and Leonhardt, U. (2012) Optical black hole lasers. Classical and Quantum Gravity, 29(22), 224009. (doi: 10.1088/0264-9381/29/22/224009)

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Using numerical simulations we show how to realize an optical black hole laser, i.e. an amplifier formed by travelling refractive index perturbations arranged so as to trap light between a white and a black hole horizons. The simulations highlight the main features of these lasers: the growth inside the cavity of positive and negative frequency modes accompanied by a weaker emission of modes that occurs in periodic bursts corresponding to the cavity round trips of the trapped modes. We then highlight a new regime in which the trapped mode spectra broaden until the zero-frequency points on the dispersion curve are reached. Amplification at the horizon is highest for zero-frequencies, therefore leading to a strong modification of the structure of the trapped light. For sufficiently long propagation times, lasing ensues only at the zero-frequency modes.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Faccio, Professor Daniele
Authors: Faccio, D., Arane, T., Lamperti, M., and Leonhardt, U.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Classical and Quantum Gravity
Publisher:IOP Publishing
ISSN (Online):1361-6382

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