Open AccessContinual mechanical vibration trajectory tracking based on electro-optical heterodyne interferometry
Author(s) -
Shengjia Wang,
Zhan Gao,
Guangyu Li,
Ziang Feng,
Qibo Feng
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.007799
Subject(s) - optics , vibration , interferometry , heterodyne (poetry) , trajectory , displacement (psychology) , physics , tracking (education) , acoustics , computer science , psychology , pedagogy , astronomy , psychotherapist
Vibration is one of the confused problems in many fields. To give a comprehensive analysis of vibration, an electro-optical heterodyne interferometry with temporal intensity analysis method that can track the trajectory of the vibration dynamically has been built in this paper. The carrier frequency is introduced by the electrically controlled electro-optical frequency shifter. The trajectory is obtained by using temporal evolution of the light intensity in heterodyne interferometry. The instantaneous displacement of the vibration is extracted with spectral analysis technique. No target mirror and moving parts are required in our self-developed system. The principle and system configuration are described. The simulations and the preliminary experiments have been performed and the results show that this trajectory tracking system is high-efficiency, low-cost, jamproof, robust, precise and simple.