Ultrafast phase-locked spectroscopy of excitons in quantum nanostructures

We have investigated the ultrafast coherent dynamics of exciton-polaritons and excitons in semiconductor quantum nanostructures, including InGaAs/AlGaAs multi quantum well Bragg structures and AlGaAs/GaAs crescent shaped quantum wire samples, by using a phase-locked spectroscopic technique. In the multi quantum well Bragg sample, a two-stage decay due to the superradiant exciton-polariton mode is clearly observed at the resonant condition. In the crescent shaped quantum wire sample, the highly sensitive coherent control measurement enables us to observe the dephasing characteristics and a very fast dephasing time T-2 of 200 to 300 Is with power dependence was observed.


Published in:
Physica Status Solidi a-Applied Research, 190, 3, 855-859
Year:
2002
ISSN:
0031-8965
Keywords:
Note:
Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba, Ibaraki 3058568, Japan. Japan Sci & Technol Corp, PRESTO, JST, Kawaguchi, Saitama 3320012, Japan. EPFL, Swiss Fed Inst Technol, Dept Phys, IMO, CH-1015 Lausanne, Switzerland. Komori, K, Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba Cent 2,1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan.
ISI Document Delivery No.: 553CB
Times Cited: 1
Cited Reference Count: 10
Cited References:
BAUMBERG JJ, 1997, PHYS STATUS SOLIDI B, V204, P9
BELLESSA J, 1998, PHYS REV B, V58, P9933
BONADEO NH, 1998, SCIENCE, V282, P1473
HAYES GR, 1999, PHYS REV LETT, V83, P2873
HEBERLE AP, 1995, PHYS REV LETT, V75, P2599
KOMORI K, 1997, APPL PHYS LETT, V71, P3350
KOMORI K, 2000, JPN J APPL PHYS 1, V39, P2347
KOMORI K, 2001, QUANT EL LAS SCI C Q, P205
MOROHASHI I, 2001, JPN J APPL PHYS 1, V40, P3012
WANG XL, 1995, APPL PHYS LETT, V66, P1506
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 Record created 2007-08-31, last modified 2018-03-17


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