Evanescent-wave photoacoustic spectroscopy with optical micro/nano fibers

被引：57

作者：

Cao, Yingchun ^{[1
]}

Jin, Wei ^{[1
]}

Ho, Lut Hoi ^{[1
]}

Liu, Zhibo ^{[1
,2
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] Nankai Univ, Teda Appl Phys Sch, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300457, Peoples R China

来源：

OPTICS LETTERS | 2012年 / 37卷 / 02期

关键词：

DIODE-LASER; GAS SENSOR; ABSORPTION;

D O I：

10.1364/OL.37.000214

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate gas detection based on evanescent-wave photoacoustic (PA) spectroscopy with tapered optical fibers. Evanescent-field instead of open-path absorption is exploited for PA generation, and a quartz tuning fork is used for PA detection. A tapered optical fiber with a diameter down to the wavelength scale demonstrates detection sensitivity similar to an open-path system but with the advantages of easier optical alignment, smaller insertion loss, and multiplexing capability. (C) 2012 Optical Society of America

引用

页码：214 / 216

页数：3

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