ulf leonhardt @ weizmann institute · dispersion curve! extrema: light with the same group velocity...
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Ulf Leonhardt @ Weizmann Institute!
Quantum effects in astrophysics?!
Hawking radiation of black holes!
Hawking radiation: connections!
Waves in moving fluids!
Moving fluids and pulse in fibre!
[T.G. Philbin et al., Science 319, 1367 (2008)]
Fibre-optical black holes!
Few-cycle pulses in microstructured fibres!
Experiment!
Probe laser!
Experiment: blue-shifting![Philbin et al., Science 319, 1367 (2008)]
Dispersion curve!
Doppler shift: co-moving versus lab frequency!
Dispersion curve!
Extrema: light with the same group velocity as the pulse!
Dispersion curve!
Wave trying to catch up!
Dispersion curve!
Frequency shifting!
Experiment: blue-shifting![Philbin et al., Science 319, 1367 (2008)]
Dispersion curve!
Negative frequency!
Hawking scattering !
Optical shock!
Hawking radiation of optical filaments in glass![F. Belgiorno et al., PRL 105, 203901 (2010)]!
Hawking radiation of optical filaments in glass![F. Belgiorno et al., PRL 105, 203901 (2010)]!
Hawking radiation?!
Hawking radiation?!
Light with negative frequencies![Rubino, McLenaghan et al., PRL 108, 253901 (2012)]!
Cherenkov – dispersive wave!
Light with negative frequencies![Rubino, McLenaghan et al., PRL 108, 253901 (2012)]!
Transformation Optics and the Geometry of Light!
Einwell and Maxstein!
Geometry and Light!