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Proceedings Paper

Parity-time anti-symmetric parametric amplification
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Paper Abstract

We describe the process of parametric amplification in a directional coupler of quadratically nonlinear and lossy waveguides, which belong to a class of optical systems with spatial parity-time (PT) symmetry in the linear regime. We identify a distinct spectral parity-time anti-symmetry associated with optical parametric interactions, and show that pump-controlled symmetry breaking can facilitate spectrally selective mode amplification in analogy with PT lasers. We also establish a connection between breaking of spectral and spatial mode symmetries, revealing the potential to implement unconventional regimes of spatial light switching through ultrafast control of PT breaking by pump pulses.

Paper Details

Date Published: 31 August 2015
PDF: 7 pages
Proc. SPIE 9546, Active Photonic Materials VII, 95461J (31 August 2015); doi: 10.1117/12.2190266
Show Author Affiliations
Diana A. Antonosyan, The Australian National Univ. (Australia)
Alexander S. Solntsev, The Australian National Univ. (Australia)
Andrey A. Sukhorukov, The Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 9546:
Active Photonic Materials VII
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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