Probing molecular absorption under slow-light propagation using a photonic crystal waveguide

被引：20
|
作者：
Dicaire, Isabelle [1 ]
De Rossi, Alfredo [2 ]
Combrie, Sylvain [2 ]
Thevenaz, Luc [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Inst Elect Engn, STI GR SCI LT Stn 11, CH-1015 Lausanne, Switzerland
[2] Thales Res & Technol, F-91767 Palaiseau, France
来源：
OPTICS LETTERS | 2012年 / 37卷 / 23期
关键词：
D O I：
10.1364/OL.37.004934
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
High-resolution infrared absorption spectroscopy of acetylene gas is demonstrated in a dispersion-engineered photonic crystal waveguide under slow-light propagation. Experimental enhancement factors of 0.31 and 1.00 are obtained for TE and TM polarization, respectively, for group indices ranging from 1.5 to 6.7. The dependence of molecular absorption on the evanescent electric-field distribution and on the group index under structural slow-light illumination is experimentally demonstrated and confirmed by time-domain simulations. (C) 2012 Optical Society of America
引用
收藏
页码：4934 / 4936
页数：3
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