A Bessel beam laser Doppler velocimeter

被引：8
|
作者：
Voigt, Andreas [1 ]
Heitkam, Sascha [1 ]
Buettner, Lars [1 ]
Czarske, Juergen [1 ]
机构：
[1] Tech Univ Dresden, Dept Elect Engn & Informat Technol, Lab Measuring & Testing Tech, D-01069 Dresden, Germany
来源：
OPTICS COMMUNICATIONS | 2009年 / 282卷 / 09期
关键词：
Laser doppler velocimetry; Bessel beam; LIGHT-BEAM; SPATIAL-RESOLUTION; BOUNDARY-LAYER; MICROMANIPULATION; SENSOR; AXICON;
D O I：
10.1016/j.optcom.2009.01.044
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a laser Doppler velocimeter that is based on the use of two intersecting Bessel beams instead of the conventionally used Gaussian beams. Due to the quasi non-divergent nature of the Bessel beams, a short effective measurement volume of about 40 mu m length could be realized with a low fringe spacing variation of 0.3%. Both of these advantageous values were experimentally verified in flow measurements. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1874 / 1878
页数：5
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