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Towards room temperature polariton amplification in semiconductor microcavities

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11 Author(s)
Saba, M. ; Phys. Dept., Fed. Inst. of Technol., Lausanne, Switzerland ; Kundermann, S. ; Deveaud, B. ; Ciuti, C.
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Summary form only given. We show that engineering the sample structure and constituent materials in order to maximize the exciton-photon coupling greatly improves the gain of the amplifier and its operating temperature. We set-up an angle-resolved pump-probe experiment in the reflection geometry, shining on to the sample 250 fs long pulses from a titanium doped sapphire laser. We report peak gain on the weak probe beam of up to 5000 in GaAs-based microcavities and demonstrate that the stimulation effect survives above liquid nitrogen temperatures, up to 120 K.

Published in:

Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the

Date of Conference:

19-24 May 2002