Ultrafast reflectivity modulation in AlxGa1-xAs/InyAlxGa1-x-yAs multiple quantum well photonic crystal waveguides

A. Z. Garcia-Deniz, P. Murzyn, A. M. Fox, D. O. Kundys, J-P. R. Wells, M. Whittaker, M. S. Skolnick, T. F. Krauss, J. S. Roberts

Research output: Contribution to journalArticlepeer-review

Abstract

We report an ultrafast optical tuning of the reflectivity of AlxGa1-xAs/InyAlxGa1-x-yAs multiple quantum well photonic crystal waveguides using a reflection geometry, pump-probe technique. Nonlinear shifts of the photonic resonances between 800 and 900 nm are demonstrated with a measured response time of similar to 300-400 fs. The nonlinear shift is attributed to virtual carriers, with the response time determined by the pump pulse duration. This demonstrates ultrafast photonic switching in a high-contrast photonic structure based on III-V quantum wells.

Original languageEnglish
Number of pages6
JournalPhysical Review. B, Condensed matter and materials physics
Volume74
DOIs
Publication statusPublished - Oct 2006

Keywords

  • NONLINEAR RESPONSE
  • ALGAAS
  • INDEX

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