Angle-resonant stimulated polariton amplifier

We experimentally demonstrate resonant coupling between photons and excitons in microcavities which can efficiently generate enormous single-pass optical gains approaching 100. This new parametric phenomenon appears as a sharp angular resonance of the incoming pump beam, at which the moving excitoni...

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Bibliographic Details
Published in:Physical review letters 2000-02, Vol.84 (7), p.1547-1550
Main Authors: Savvidis, PG, Baumberg, JJ, Stevenson, RM, Skolnick, MS, Whittaker, DM, Roberts, JS
Format: Article
Language:English
Subjects:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON GAS
ENTROPY
FERMI GAS
GROUND STATES
IMPURITIES
KONDO EFFECT
MAGNETIC SUSCEPTIBILITY
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
THEORETICAL DATA
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Summary:We experimentally demonstrate resonant coupling between photons and excitons in microcavities which can efficiently generate enormous single-pass optical gains approaching 100. This new parametric phenomenon appears as a sharp angular resonance of the incoming pump beam, at which the moving excitonic polaritons undergo very large changes in momentum. Ultrafast stimulated scattering is clearly identified from the exponential dependence on pump intensity. This device utilizes boson amplification induced by stimulated energy relaxation.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.84.1547