Conference paper
Extended coherence lifetimes in microcavities under angle-resonant pumping conditions
Strong laser-like emission from polaritons in microcavities has been observed and attributed to bosonic enhancement in the emission process (Snellart and Bloch, 1999; Savvidis et al, 2000; Erland et al, 2000). This relies on the bosonic nature of low-density polaritons stimulating the scattering processes by the final-state polariton population.
Strong enhancements of the scattering processes have been observed as a result of up to several 100 polaritons per final k-state under angle-resonant pumping conditions (Erland et al, 2000; Stevenson et al, 2000). Energy and wave vector are conserved in the angle-resonant process by scattering of two k/sub ËË/=k/sub ËË,res/ polaritons into 2k/sub ËË,res/ and k/sub ËË/å0 states, respectively, the latter resulting in the strong secondary emission that is studied in this work.
| Language: | English |
|---|---|
| Publisher: | Opt. Soc. America |
| Year: | 2001 |
| Pages: | 232-233 |
| Proceedings: | 2001 Quantum Electronics and Laser Science Conference |
| ISBN: | 155752663X , 155752663x and 9781557526632 |
| Types: | Conference paper |
| DOI: | 10.1109/QELS.2001.962147 |
| ORCIDs: | Hvam, Jørn Märcher |
Frequency Laser excitation Microcavities Nonlinear optics Optical pumping Optical scattering Polarization Probes Resonance Ultrafast optics angle-resonant process angle-resonant pumping conditions bosonic enhancement bosonic nature coherence lifetimes emission process energy conservation final-state polariton population four-wave mixing laser-like emission light coherence low-density polaritons microcavities multiwave mixing optical pumping polariton scattering polaritons scattering process enhancements scattering process stimulation secondary emission semiconductor quantum wells wave vector conservation
