Ultrafast optical response of a high-reflectivity GaAs/AlAs Bragg mirror

被引：8
|
作者：
Hastings, SR
de Dood, MJA
Kim, HC
Marshall, W
Eisenberg, HS
Bouwmeester, D [1 ]
机构：
[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[2] Univ Oxford, Dept Phys, Oxford OX1 3PU, England
来源：
APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.1854200
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The ultrafast response of a high-reflectivity GaAs/AlAs Bragg mirror to optical pumping is investigated for all-optical switching applications. Both Kerr and free carrier nonlinearities are induced with 100 fs, 780 nm pulses with a fluence of 0.64 and 0.8 kJ/m(2). The absolute transmission of the mirror at 931 nm increases by a factor of 27 from 0.0024% to 0.065% on a picosecond time scale. These results demonstrate the potential for a high-reflectivity ultrafast switchable mirror for quantum optics and optical communication applications. A design is proposed for a structure to be pumped below the band gaps of the semiconductor mirror materials. Theoretical calculations on this structure show switching ratios up to 2200 corresponding to switching from 0.017% to 37.4% transmission. (C) 2005 American Institute of Physics. [DOI: 10.1063/1.1854200]
引用
收藏
页码：1 / 3
页数：3
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