All-optical picosecond switching of a quantum well etalon using spin-polarization relaxation

Yuji Nishikawa*, Atsushi Tackeuchi, Satoshi Nakamura, Shunichi Muto, Naoki Yokoyama

*この研究の対応する著者

研究成果: Article査読

78 被引用数 (Scopus)

抄録

All-optical picosecond gate operation is demonstrated using the spin relaxation in a quantum well etalon. Electron spin-polarization photoexcited by circularly polarized light in GaAs quantum wells decays in picoseconds. With the use of the spin relaxation in a quantum well etalon, all-optical full switching is achieved with a decay time of as fast as 7 ps, by adopting a simple optical differential method, which uses only a quarter-wave plate and a polarizer in addition to the conventional all-optical switching setup.

本文言語English
ページ(範囲)839
ページ数1
ジャーナルApplied Physics Letters
DOI
出版ステータスPublished - 1995
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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