Author:
Kojima Osamu,Tamachii Ikuo,Kita Takashi
Abstract
Abstract
Ultrafast responses caused by ultrashort pulse excitation can be applied to ultrafast optical switches with high-speed information processing. In this paper, via the impulsive interference of excitons, we achieve an ultrafast optical response suited for ultrafast switches in all-optical networks. Due to the simultaneous excitation of two exciton states in the multiple quantum well on a strained buffer layer without the occurrence of adverse effects like stacking faults, impulsive interference is induced. The small compressive strain from the buffer layer modifies the orientation of the excitons inside the quantum well, and causes the ultrafast response.
Funder
Hyogo Science and Technology Association
Iketani Science and Technology Foundation
Japan Society for the Promotion of Science
Subject
General Physics and Astronomy,General Engineering