摘要
提出了一种基于双色LED芯片的双波长像面数字全息显微术。将主波长为670nm的红光芯片和主波长为521nm的绿光芯片封装成半球型LED芯片,然后利用彩色CCD相机获取被测样品在两种照明光波下的彩色相移数字全息图,最后采用色彩分离技术、相移技术及双波长相位提取技术获取被测样品的相位分布及面型分布。实验结果证明了本文方法的可行性。
Dual-wavelength image-plane digital holographic microscopy based on bi-color LED chips is proposed.Firstly,a red LED chip with central wavelength of 670 nm and a green LED chip with central wavelength of 521 nm are packaged as a hemispherical LED chip.Composite holograms at different wavelengths and phase shift are recorded with a color CCD camera.The phase distribution and surface profile of the sample are reconstructed based on the color separation technology,phase shifting technology and dual-wavelength phase extracting technology.The feasibility of the proposed method is demonstrated by the experimental results.
作者
邓丽军
黄星艳
曾吕明
黄振
刘国栋
Deng Lijun;Huang Xingyan;Zeng Luming;Huang Zhen;Liu Guodong(Jiangxi Provincial Key Laboratory of Optoelectronics and Communications, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330038, China;Graduate College, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330038, China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2018年第1期127-133,共7页
Acta Optica Sinica
基金
国家自然科学基金(11664011)
江西省科技支撑计划(20132BBG70033)
江西省2011协同创新项目
江西科技师范大学博士科研启动基金(3000990325)
江西省自然科学基金(2017ACB20027)
关键词
成像系统
双波长像面数字全息显微术
双色LED芯片
相位分布
面型分布
imaging systems
dual-wavelength image-plane digital holographic microscopy
bi-color LED chips
phase distribution
surface profile
