Optical Dephasing of Excitonic Polaritons in CuCl Studied by Time-Resolved, Nondegenerate Four-Wave Mixing | Zendy

Yasuaki Masumoto | Zendy; Shigeo Shionoya | Zendy; T. Takagahara | Zendy

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Optical Dephasing of Excitonic Polaritons in CuCl Studied by Time-Resolved, Nondegenerate Four-Wave Mixing

Author(s) -

Yasuaki Masumoto,

Shigeo Shionoya,

T. Takagahara

Publication year - 1983

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.51.923

Subject(s) - dephasing , polariton , physics , omega , picosecond , resonance (particle physics) , exciton , four wave mixing , condensed matter physics , pulse (music) , mixing (physics) , atomic physics , optics , quantum mechanics , nonlinear optics , laser , detector

Optical dephasing of excitonic polaritons in CuCl is directly measured for the first time in the picosecond time domain by means of time-resolved, nondegenerate four-wave mixing. Dephasing of the ω1 polariton pulse is probed by an interrogation ω2 polariton pulse whose group velocity is faster than that of the ω1 polariton pulse. It is found that the dephasing damping constant Γ / 2 of excitonic polaritons is of order of 0.01 meV and increases as hω1 approaches the exciton resonance energy from below

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