Wideband coherent perfect absorber based on white-light cavity

被引：29
|
作者：
Kotlicki, Omer [1 ]
Scheuer, Jacob [1 ]
机构：
[1] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel
来源：
OPTICS LETTERS | 2014年 / 39卷 / 23期
关键词：
BROAD-BAND; ABSORPTION; LASER;
D O I：
10.1364/OL.39.006624
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a new concept for a broadband coherent perfect absorber (CPA), utilizing the properties of white-light cavities. The designed structure attains coherent absorption over a wide spectrum (40 nm), overcoming the single-frequency limitation of conventional CPAs. A closed form analytic description is presented, supplemented by finite difference time-domain simulations for Si-based devices, demonstrating flat, wide-band power absorption. A new integrated-optics-based pulse absorber/terminator and optical modulator based on these devices are proposed and analyzed. (C) 2014 Optical Society of America
引用
收藏
页码：6624 / 6627
页数：4
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