Circularly polarized lasing in a (110)-oriented quantum well vertical-cavity surface-emitting laser under optical spin injection

Circularly polarized lasing in a (110)-oriented quantum well vertical-cavity surface-emitting laser under optical spin injection

We fabricated and characterized a vertical-cavity surface-emitting laser (VCSEL) based on (110) InGaAs/GaAs multiple quantum wells (MQWs). Circularly polarized lasing in the (110) VCSEL by optical injection of spin-polarized electrons has been demonstrated at 77 K and room temperature. A high degree...

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Veröffentlicht in:Applied physics letters 2009-03, Vol.94 (13), p.131108-131108-3
Hauptverfasser: Fujino, Hiroshi, Koh, Shinji, Iba, Satoshi, Fujimoto, Toshiyasu, Kawaguchi, Hitoshi
Format: Artikel
Sprache:eng
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Zusammenfassung:We fabricated and characterized a vertical-cavity surface-emitting laser (VCSEL) based on (110) InGaAs/GaAs multiple quantum wells (MQWs). Circularly polarized lasing in the (110) VCSEL by optical injection of spin-polarized electrons has been demonstrated at 77 K and room temperature. A high degree of circular polarization, 0.94, was observed at 77 K, reflecting the long electron spin relaxation time in the (110) MQWs.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3112576