Ultrafast Slow-Light Tuning Beyond the Carrier Lifetime Using Photonic Crystal Waveguides

被引：60

作者：

Kondo, K. ^{[1
]}

Shinkawa, M. ^{[1
,2
]}

Hamachi, Y. ^{[1
,2
]}

Saito, Y. ^{[1
,2
]}

Arita, Y. ^{[1
,2
]}

Baba, T. ^{[1
,2
]}

机构：

[1] Yokohama Natl Univ, Dept Elect & Comp Engn, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan

[2] Japan Sci & Technol Agcy, Core Res Evolut Sci & Technol, Chiyoda Ku, Tokyo 1020075, Japan

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 05期

基金：

日本学术振兴会;

关键词：

LOW-DISPERSION; NONLINEAR ENHANCEMENT; DELAY; BAND;

D O I：

10.1103/PhysRevLett.110.053902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate ultrafast delay tuning of a slow-light pulse with a response time <10 ps. This is achieved using two types of slow light: dispersion-compensated slow light for the signal pulse, and low-dispersion slow light to enhance nonlinear effects of the control pulse. These two types of slow light are generated simultaneously in Si lattice-shifted photonic crystal waveguides, arising from flat and straight photonic bands, respectively. The control pulse blueshifts the signal pulse spectrum, through dynamic tuning caused by the plasma effect of two-photon-absorption-induced carriers. This changes the delay by up to 10 ps only when the two pulses overlap within the waveguide and enables ultrafast tuning that is not limited by the carrier lifetime. Using this, we succeeded in tuning the delay of one target pulse within a pulse train with 12 ps intervals. DOI: 10.1103/PhysRevLett.110.053902

引用

页数：5

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