Parity-time anti-symmetric parametric amplifier

Diana A. Antonosyan; Alexander S. Solntsev; Andrey A. Sukhorukov

doi:10.1364/OL.40.004575

Parity-time anti-symmetric parametric amplifier

Diana A. Antonosyan
, Alexander S. Solntsev
, Andrey A. Sukhorukov^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

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 pumpcontrolled 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.

Original language	English
Pages (from-to)	4575-4578
Journal	Optics Letters
Volume	40
Issue number	20
Early online date	2 Oct 2015
DOIs	https://doi.org/10.1364/OL.40.004575
Publication status	Published - 15 Oct 2015

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N2 - 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 pumpcontrolled 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.

AB - 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 pumpcontrolled 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.

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JO - Optics Letters

JF - Optics Letters

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Parity-time anti-symmetric parametric amplifier

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