Observation of small group velocity in two-dimensional AlGaAs-based photonic crystal slabs

被引：55

作者：

Inoue, K ^{[1
]}

Kawai, N

Sugimoto, Y

Carlsson, N

Ikeda, N

Asakawa, K

机构：

[1] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 0600812, Japan

[2] Femtosecond Technol Res Assoc, Tsukuba, Ibaraki 3002635, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.65.121308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characteristics of the small group velocity nu(g) were experimentally studied with special concern to a flat band in AlGaAs-based two-dimensional photonic crystal slabs by using a time-of-flight method of a 200 fs light pulse. Two kinds of triangular air-rod samples, i.e., a deeply perforated waveguide and a perforated membrane suspended in air were used. For the former with the numbers of rod's row N of 10, nu(g) was found to vary from 0.17xc at a wavelength far from the band edge to 0.03xc at the edge; c is the light velocity in vacuum. For the latter with N of 26, nu(g) was observed to be in a range of (0.05-0.07)xc. The significance of the result is discussed.

引用

页码：1 / 4

页数：4

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