Resolution improvement in digital holography by angular and polarization multiplexing

C Yuan, G Situ, G Pedrini, J Ma, W Osten - Applied optics, 2011 - opg.optica.org
Angular and polarization multiplexing techniques are utilized in both object and reference
arms in the digital holographic microscopy system to improve its resolution. The angular …

Simultaneous particle size and 3D position measurements of pulverized coal flame with digital inline holography

Y Wu, X Wu, L Yao, Z Xue, C Wu, H Zhou, K Cen - Fuel, 2017 - Elsevier
Abstract 3D measurements of burning coal particles in the flame are challenging and of
great interest. Digital inline holography is applied to perform 3D measurement of coal …

3D imaging of individual burning char and volatile plume in a pulverized coal flame with digital inline holography

Y Wu, L Yao, X Wu, J Chen, G Gréhan, K Cen - Fuel, 2017 - Elsevier
The burning behaviors of an individual coal particle in the combustion of a cloud of coal
particles is of great importance because it represents the realistic situation of pulverized coal …

Six-pack holography for dynamic profiling of thick and extended objects by simultaneous three-wavelength phase unwrapping with doubled field of view

SK Mirsky, NT Shaked - Scientific Reports, 2023 - nature.com
Dynamic holographic profiling of thick samples is limited due to the reduced field of view
(FOV) of off-axis holography. We present an improved six-pack holography system for the …

Phase imaging microscopy under the Gabor regime in a minimally modified regular bright-field microscope

V Micó, K Trindade, JÁ Picazo-Bueno - Optics Express, 2021 - opg.optica.org
Quantitative phase imaging (QPI) is nowadays a powerful tool for visualization and analysis
of biological processes. QPI is usually attained from specifically designed optical …

Extended depth of focus in a particle field measurement using a single-shot digital hologram

W Chen, C Quan, CJ Tay - Applied Physics Letters, 2009 - pubs.aip.org
We propose a method to extend the depth of focus in a particle field measurement using a
single-shot digital hologram. A focal plane is obtained for each pixel based on an entropy …

[PDF][PDF] 压缩感知重建数字同轴全息

吴迎春, 吴学成, 王智化, 陈玲红, 周昊, 岑可法 - 光学学报, 2011 - researching.cn
摘要数字重建是数字全息技术的关键步骤. 传统的重建算法存在共轭像, 聚焦物体与背景离焦
物体相互干扰等问题. 应用新兴的压缩感知技术, 研究了全息图像的稀疏重建 …

A forward-angle-scattering method for the determination of optical constants and particle size distribution by collimated laser irradiation

Y Ren, H Qi, X Yu, L Ruan - Optics Communications, 2017 - Elsevier
This study examined the feasibility of using a secondary optimization technique and forward-
angle-scattering method to retrieve optical constants (or complex refractive indices) and …

Resolution enhancement in digital holographic microscopy with structured illumination

J Ma, C Yuan, G Situ, G Pedrini, W Osten - Chinese Optics Letters, 2013 - opg.optica.org
We present a digital holographic microscope wherein the sample is illuminated by structured
light to enable the capture of additional object spatial frequencies. Reconstructed images …

[PDF][PDF] 数字显微全息重建图像的景深扩展研究

阳静, 吴学成, 吴迎春, 姚龙超, 陈玲红, 邱坤赞… - 物理学报, 2015 - wulixb.iphy.ac.cn
显微物镜的景深问题限制数字显微全息在大纵深视场中的应用. 本文充分利用数值重建的特点,
采取低频和高频系数子图上的最大亮度梯度的局部方差作为聚焦判据, 在小波分解域内对显微 …