Research on heterodyne efficiency of laser Doppler velocimeter

详细信息    查看全文

• 作者：Guo Wei  ; ;   ; ^{nudtweiguo@163.com} ; Yu Wang ; Jian Zhou ; Xingwu Long
• 关键词：Laser Doppler velocimeter ; Gaussian-Airy mode ; Heterodyne efficiency
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：122
• 期：23
• 页码：2090-2093
• 全文大小：404 K

文摘

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?i xmlns="""">x₀, A, ¦È and x_a. Heterodyne efficiency can reach 81.45 % , when x₀ = 3.59, A = 5.04 and ¦È = 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.