The search functionality is under construction.

IEICE TRANSACTIONS on Electronics

Ultrafast All-Optical Switching and Modulation Using Intersubband Transitions in Coupled Quantum Well Structures

Haruhiko YOSHIDA, Takasi SIMOYAMA, Achanta Venu GOPAL, Jun-ichi KASAI, Teruo MOZUME, Hiroshi ISHIKAWA

  • Full Text Views

    0

  • Cite this

Summary :

In this report we present all-optical switches and modulators based on the intersubband transition in semiconductor quantum wells. The use of InGaAs/AlAsSb coupled double quantum well structures is proposed to facilitate intersubband transitions in the optical-communication band, and to reduce the intersubband absorption recovery time from several picoseconds to a few hundred femtoseconds by utilizing enhanced electron-phonon scattering. Subpicosecond all-optical gating and modulation in coupled double quantum wells are observed using pump-probe experiments at optical-communication wavelengths. The results indicate that the intersubband transition in this structure is very useful for ultrafast all-optical switching devices.

Publication
IEICE TRANSACTIONS on Electronics Vol.E87-C No.7 pp.1134-1141
Publication Date
2004/07/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section INVITED PAPER (Special Section on Ultrafast Photonics)
Category

Authors

Keyword