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      Hawking radiation from ultrashort laser pulse filaments

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          Abstract

          Event horizons of astrophysical black holes and gravitational analogues have been predicted to excite the quantum vacuum and give rise to the emission of quanta, known as Hawking radiation. We experimentally create such a gravitational analogue using ultrashort laser pulse filaments and our measurements demonstrate a spontaneous emission of photons that confirms theoretical predictions.

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          Most cited references 11

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          Experimental Black-Hole Evaporation?

           W. Unruh (1981)
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            General relativity

             S. W. HAWKING (1974)
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              White-light filaments for atmospheric analysis.

              Most long-path remote spectroscopic studies of the atmosphere rely on ambient light or narrow-band lasers. High-power femtosecond laser pulses have been found to propagate in the atmosphere as dynamically self-guided filaments that emit in a continuum from the ultraviolet to the infrared. This white light exhibits a directional behavior with enhanced backward scattering and was detected from an altitude of more than 20 kilometers. This light source opens the way to white-light and nonlinear light detection and ranging applications for atmospheric trace-gas remote sensing or remote identification of aerosols. Air ionization inside the filaments also opens promising perspectives for laser-induced condensation and lightning control. The mobile femtosecond-terawatt laser system, Teramobile, has been constructed to study these applications.
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                Author and article information

                Journal
                23 September 2010
                Article
                10.1103/PhysRevLett.105.203901
                1009.4634

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                Custom metadata
                4 pages, 4 figures, Phys. Rev. Lett. (accepted)
                gr-qc astro-ph.CO physics.optics quant-ph

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