中国激光, 1991, 18 (2): 139, 网络出版: 2007-11-12
光拍窄带检测小位移
Small displacement measurement by optical heterodyne narrow band detection
光拍振幅检测 光拍相位检测 窄带检测 optical heterodyne amplitude detection optical heterodyne phase detection narrow band detection
摘要
本文给出两种检测小振动位移的方法,其中光拍振幅窄带检测小位移灵敏度达5.2×10-4 nm(振动频率2 kHz),且从噪声谱测试角度比较了振幅检测法与相位检测法。
Abstract
Two methods for measuring small vibration displacement are reported. The sensitivity of small displacement of optical heterodyne amplitude narrow band de ection reaches 5.2×10-4 nm(2 kHz signal).The amplitude detection method is comparedwith the phase detection method by measuring noise spectrum.
参考文献
万炼, 汤俊雄, 吴义芳, 施清, 郑乐民. 光拍窄带检测小位移[J]. 中国激光, 1991, 18(2): 139. 万炼, 汤俊雄, 吴义芳, 施清, 郑乐民. Small displacement measurement by optical heterodyne narrow band detection[J]. Chinese Journal of Lasers, 1991, 18(2): 139.
PDF全文
