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arXiv · 1710.08752

Giant asymmetric self-phase modulation in superconductor thin films

Charles Robson·Fabio Biancalana
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Abstract

Self-phase modulation (SPM) of light pulses is found to occur strongly, at low incident intensities, in the coupling of light with superconductors. We develop a theory from a synthesis of the time-dependent Ginzburg-Landau (TDGL) equation and basic electrodynamics which shows the strongly non-linear phase accumulated in the interaction. Unusually, the SPM of the pulse in this system is found to be highly asymmetric, producing a strongly redshifted spectrum when interacting with a superconducting thin film, and it develops in just a few nanometers of propagation. In this paper we present theoretical results and simulations in the THz regime, for both hyperbolic secant and supergaussian-shaped pulses.

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Charles Robson, Fabio Biancalana. 2017-10-24. Giant asymmetric self-phase modulation in superconductor thin films. https://arxiv.org/abs/1710.08752

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