Optical Kerr response to multi pump pulses on GaAs weakly confined exciton

Atsushi Kanno, Redouane Katouf, Osamu Kojima, Junko Ishi-Hayase, Masahiro Tsuchiya, Toshiro Isu

研究成果: Conference article査読

2 被引用数 (Scopus)


We investigate optical Kerr response under two-pump pulse irradiation induced by GaAs weakly confined exciton. Ultrafast response times of the order of picoseconds are observed despite long exciton lifetime of the order of nanoseconds. The difference may be attributed to the relaxation mechanisms between population relaxation and nonlinear relaxation of excitons. In addition, the observed temporal shapes of the optical Kerr response are conserved under irradiation by a preceding pulse that forms the exciton population. The pulse separation of the optical Kerr response between two pump pulses is achieved to be 800 fs, which corresponds to a signal train of 1.25 Tbits per second.

ジャーナルPhysica Status Solidi (C) Current Topics in Solid State Physics
出版ステータスPublished - 2009 9 30
イベント35th International Symposium on Compound Semiconductors, ISCS 2008 - Rust, Germany
継続期間: 2008 9 212008 9 24

ASJC Scopus subject areas

  • Condensed Matter Physics

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