激光技术Issue(5)：666-668,3.DOI:10.7510/jgjs.issn.1001-3806.2015.05.017
基于光纤振动的激光散斑抑制方法的研究
Research of laser speckle suppression method based on fiber vibration
摘要
Abstract
In order to eliminate the speckle in laser microscopic imaging system , effect of optical fiber vibration on microscopic speckle images was studied by comparing the speckle dark ratio .In this experiment, with laser at 532nm wavelength as light source of the microscopic system , with the optical fiber vibration to eliminate the image speckle and a CCD image sensor acquisition system to collect the microscopic images of the sample surface , images dark ratios were analyzed at different vibration voltages.The results show that with the increase of the vibration voltage , the speckle dark ratio of the images will reduce gradually.When the voltage is 2.6V, the image speckle dark ratio can reach 5.64%, speckle contrast is 4.17%close to human eye resolution of 4%.This method can achieve good speckle elimination effect .关键词
激光技术/激光散斑/散斑暗区比/光纤振动Key words
laser technique/laser speckle/speckle dark ratio/optical fiber vibration分类
信息技术与安全科学引用本文复制引用
王静,贺锋涛,曹金凤,朱玉晗,左波..基于光纤振动的激光散斑抑制方法的研究[J].激光技术,2015,(5):666-668,3.基金项目
国家自然科学基金资助项目 （）
