Superresonant radiation stimulated by higher harmonics

Lourés, C. R., Roger, T., Faccio, D. and Biancalana, F. (2017) Superresonant radiation stimulated by higher harmonics. Physical Review Letters, 118(4), 043902. (doi: 10.1103/PhysRevLett.118.043902) (PMID:28186799)

Abstract

Solitons propagating in media with higher-order dispersion will shed radiation known as resonant radiation, with applications in frequency broadening, deep UV sources for spectroscopy, and fundamental studies of soliton physics. Using a recently proposed equation that models the behavior of ultrashort optical pulses in nonlinear media using the analytic signal, we find that the resonant radiation associated with the third-harmonic generation term of the equation is parametrically stimulated with an unprecedented gain. Resonant radiation levels, typically only a small fraction of the soliton, are now as intense as the soliton itself. The mechanism is universal and works also in normal dispersion and with harmonics higher than the third. We report experimental hints of this superresonant radiation stimulated by the fifth harmonic in diamond.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Faccio, Professor Daniele
• Authors: Lourés, C. R., Roger, T., Faccio, D., and Biancalana, F.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114
• Copyright Holders: Copyright © 2017 American Physical Society
• First Published: First published in Physical Review Letters 118(4):043902
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher