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arXiv 1102.2852cond-mat.other
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强耦合非对称双量子阱微腔中的取向极化激元

Oriented polaritons in strongly-coupled asymmetric double quantum well microcavities

Gabriel Christmann, Alexis Askitopoulos, George Deligeorgis, Zacharias Hatzopoulos, Simeon I. Tsintzos, Pavlos G. Savvidis, Jeremy J. Baumberg

摘要:

用双量子阱取代强耦合半导体微腔中独立的单量子阱,产生一种特殊类型的极化激元。在加工成台面的器件中使用非对称双量子阱允许电子能级的对准被电压调谐。在共振电子隧穿条件下,我们证明了“定向极化激元”的形成,具有大大增强的偶极矩。由于极化激元-极化激元散射速率取决于该偶极矩,因此这种器件可以在低得多的阈值功率下实现极化激元激射、凝聚和光学非线性。

英文摘要:

Replacing independent single quantum wells inside a strongly-coupled semiconductor microcavity with double quantum wells produces a special type of polariton. Using asymmetric double quantum wells in devices processed into mesas allows the alignment of the electron levels to be voltage-tuned. At the resonant electronic tunnelling condition, we demonstrate that `oriented polaritons' are formed, which possess greatly enhanced dipole moments. Since the polariton-polariton scattering rate depends on this dipole moment, such devices could reach polariton lasing, condensation and optical nonlinearities at much lower threshold powers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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