10 October 2013 An experiment of femtosecond laser absolute distance measurement by spectrally resolved interferometry
Author Affiliations +
Proceedings Volume 8916, Sixth International Symposium on Precision Mechanical Measurements; 891607 (2013) https://doi.org/10.1117/12.2035617
Event: Sixth International Symposium on Precision Mechanical Measurements, 2013, Guiyang, China
Abstract
An experiment of absolute distance measurement by spectrally resolved interferometry has been executed. A Ti:Sapphire femtosecond laser without stable frequency and stable phase was used as an optical source of the measurement system. It greatly simplifies the complexity of the measurement system. A Fabry-Perot Etalon made by ourselves was employed as an optical filter to pick up frequency modes from the broad bandwidth spectrum of femtosecond laser pulse. To achieve the absolute distance, a linear array CCD detector was used to get the interferometric phase information for the calculation of distance. The measurement experiment was carried out in the non-ambiguity range and ranging precision of less than 5 μm was achieved. The result indicates that it’s feasible to measure the absolute distance by spectrally resolved interferometry with a simple femtosecond laser.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Weihu Zhou, Yao Li, Rongyi Ji, Yan Xu, Deming Liu, "An experiment of femtosecond laser absolute distance measurement by spectrally resolved interferometry", Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 891607 (10 October 2013); doi: 10.1117/12.2035617; https://doi.org/10.1117/12.2035617
PROCEEDINGS
6 PAGES


SHARE
Back to Top