Crossover from exciton to biexciton cavity polaritons

We report novel oscillator strength transfer phenomena induced by the exciton-exciton correlation. A high quality semiconductor microcavity is resonantly excited by intense circularly polarised sigma(+) pump pulses (100 fs long) and probed at different delays by weak counter-polarised sigma(-) test pulses. We show that the presence of sigma(+) excitons can completely inhibit the creation of sigma(-) excitons. With increasing sigma(+) exciton density the oscillator strength of the a- transition is transferred to the biexciton transition, permitting the first observation of the strong coupling regime between the biexciton transition and the cavity photon mode, i.e., the biexciton polariton states.


Published in:
Physica Status Solidi B-Basic Research, 221, 1, 157-162
Year:
2000
ISSN:
0370-1972
Keywords:
Note:
Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland. Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy. Univ Cagliari, INFM, I-09042 Monserrato, CA, Italy. Saba, M, Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 362PZ
Times Cited: 0
Cited Reference Count: 9
Cited References:
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 Record created 2007-08-31, last modified 2018-03-17


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