Parity-time anti-symmetric parametric amplifier

We describe the process of parametric amplification in a directional coupler of quadratically nonlinear and lossy waveguides, which belongs to a class of optical systems with spatial parity-time (PT) symmetry in the linear regime. We identify a distinct spectral PT anti-symmetry associated with opti...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2015-10, Vol.40 (20), p.4575-4578
Main Authors: Antonosyan, Diana A, Solntsev, Alexander S, Sukhorukov, Andrey A
Format: Article
Language:English
Subjects:
Amplification
Breaking
Broken symmetry
Joints
Lasers
Pumps
Spectra
Symmetry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We describe the process of parametric amplification in a directional coupler of quadratically nonlinear and lossy waveguides, which belongs to a class of optical systems with spatial parity-time (PT) symmetry in the linear regime. We identify a distinct spectral PT anti-symmetry associated with optical parametric interaction, and show that pump-controlled symmetry breaking can facilitate spectrally selective mode amplification in analogy with PT lasers. We also establish a connection between the 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.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.40.004575