Research on heterodyne efficiency of laser Doppler velocimeter

被引：3
|
作者：
Wei, Guo [1 ]
Wang, Yu [1 ]
Zhou, Jian [1 ]
Long, Xingwu [1 ]
机构：
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
OPTIK | 2011年 / 122卷 / 23期
关键词：
Laser Doppler velocimeter; Gaussian-Airy mode; Heterodyne efficiency; MU-M; ANEMOMETER;
D O I：
10.1016/j.ijleo.2011.01.002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Heterodyne efficiency is a very important factor in a laser Doppler velocimeter (LDV). Gaussian-Airy mode is put forward to analyze the heterodyne efficiency. And the calculate formulas and results of simulation of heterodyne efficiency are given. The results of numerical analysis show that heterodyne efficiency of LDV depends on the parameters-x(0), A, theta and x(0). Heterodyne efficiency can reach 81.45%, when x(0) = 3.59, A = 5.04 and theta = x(a) = 0. At last, the antenna theorem of LDV is derived, and a defocused telescope system is used to adjust the waist's position and radius of the reference beam to match the signal beam. (C) 2011 Elsevier GmbH. All rights reserved.
引用
收藏
页码：2090 / 2093
页数：4
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