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Title: Optical amplifier based on guided polaritons in GaN and ZnO

We propose a scheme of an optical amplifier based on GaN and ZnO waveguides operating in the regime of strong coupling between photonic modes and excitonic resonances. Amplification of the guided exciton-polaritons is obtained by stimulated scattering from the excitonic reservoir, which is found to be fast enough compared with the large velocity of the guided polariton modes. We analyze the device parameters at different temperatures. We find that an 80 μm-long amplifier can provide a gain of 10 dB at room temperature, being supplied by 5 mA current in the cw regime.
Authors:
; ;  [1]
  1. Institut Pascal, PHOTON-N2, Clermont Université, Université Blaise Pascal, CNRS, Clermont-Ferrand (France)
Publication Date:
OSTI Identifier:
22395439
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMPLIFIERS; AVAILABILITY; COMPARATIVE EVALUATIONS; COUPLING; ELECTRIC CURRENTS; EXCITONS; GAIN; GALLIUM NITRIDES; POLARONS; RESONANCE; SCATTERING; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; VELOCITY; WAVEGUIDES; ZINC OXIDES