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Frontiers in Optics

Phase Sensitive Amplification in Metastable Helium at Room Temperature

Jasleen Lugani, Chitram Banerjee, Marie-Aude Maynard, Pascal Neveu, Ram Soorat, Rupamanjari Ghosh, Fabien Bretenaker, Fabienne Goldfarb

Published Jan 1, 2016• 0 citations
Publisher

Abstract

We have performed phase sensitive amplification (PSA) in metastable helium. The maximum and minimum gain behaviors and their values compared to the gain for the Phase Insensitive Amplification (PIA), correspond to a very pure PSA.
DOI
10.1364/fio.2016.jw4a.16

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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text J. Lugani, C. Banerjee, M. Maynard, P. Neveu, R. Ghosh, F. Bretenaker, and F. Goldfarb, "Phase Sensitive Amplification in Metastable Helium at Room Temperature," in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optica Publishing Group, 2016), paper JTu5A.7. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
We experimentally demonstrate a single-pumped, non-degenerate phase-sensitive parametric amplifier with a precise control of phase and amplitude of the in-going waves and investigate in detail its gain, attenuation and saturation properties in comparison with operation in phase insensitive amplifier (PIA) mode. We experimentally observe the variation of the gain and attenuation as a function of the relative phase, pump power and the signal-idler power ratio. The phase sensitive gain spectrum is studied over a 24 nm symmetrical bandwidth and we achieve a maximum phase sensitive amplification (PSA) gain of 33 dB. A departure from the theoretical maximum attenuation as the gain increases is observed and explained.