scholarly journals Optical diffraction tomography using a digital micromirror device for stable measurements of 4D refractive index tomography of cells

2016 ◽  
Author(s):  
Seungwoo Shin ◽  
Kyoohyun Kim ◽  
Taeho Kim ◽  
Jonghee Yoon ◽  
Kihyun Hong ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Diffraction ◽  
Diffraction Tomography ◽  
Digital Micromirror Device ◽  
Optical Diffraction Tomography

Enhancement of optical resolution in three-dimensional refractive-index tomograms of biological samples by employing micromirror-embedded coverslips

Lab on a Chip ◽  
2018 ◽  
Vol 18 (22) ◽  
pp. 3484-3491 ◽  
Author(s):  
Seungwoo Shin ◽  
Jihye Kim ◽  
Je-Ryung Lee ◽  
Eun-chae Jeon ◽  
Tae-Jin Je ◽  
...  
Keyword(s):  
Refractive Index ◽  
Biological Samples ◽  
Three Dimensional ◽  
Optical Resolution ◽  
Optical Diffraction ◽  
Diffraction Tomography ◽  
Optical Diffraction Tomography

Resolution-enhanced optical diffraction tomography using a micromirror-embedded coverslips.

scholarly journals Three-dimensional refractive index distributions of individual angiosperm pollen grains

2018 ◽  
Author(s):  
Chansuk Park ◽  
SangYun Lee ◽  
Geon Kim ◽  
SeungJun Lee ◽  
Jaehoon Lee ◽  
...  
Keyword(s):  
Refractive Index ◽  
Three Dimensional ◽  
Pollen Grains ◽  
Optical Diffraction ◽  
Diffraction Tomography ◽  
Optical Diffraction Tomography ◽  
Internal Structures ◽  
Quantitative Analyses ◽  
Angiosperm Pollen ◽  
Preparation Techniques

Three-dimensional (3D) refractive index (RI) imaging and quantitative analyses of angiosperm pollen grains are presented. Using optical diffraction tomography, the 3D RI structures of individual angiosperm pollen grains were measured without using labeling or other preparation techniques. Various physical quantities, including volume, surface area, exine volume, and sphericity, were determined from the measured RI tomograms of pollen grains. Exine skeletons, the distinct internal structures of angiosperm pollen grains, were identified and systematically analyzed.

scholarly journals Optical Fiber Refractive Index Profiling by Iterative Optical Diffraction Tomography

2018 ◽  
Vol 36 (24) ◽  
pp. 5754-5763 ◽  
Author(s):  
Shengli Fan ◽  
Seth Smith-Dryden ◽  
Jian Zhao ◽  
Stefan Gausmann ◽  
Axel Schulzgen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Optical Diffraction ◽  
Diffraction Tomography ◽  
Optical Diffraction Tomography

Investigation of limitations of optical diffraction tomography

2007 ◽  
Vol 15 (2) ◽  
Author(s):  
T. Kozacki ◽  
M. Kujawińska ◽  
P. Kniażewski
Keyword(s):  
Refractive Index ◽  
Dynamic Range ◽  
Tomographic Reconstruction ◽  
Back Propagation ◽  
Reconstruction Algorithm ◽  
Optical Diffraction ◽  
Diffraction Tomography ◽  
Refractive Index Distribution ◽  
Optical Diffraction Tomography ◽  
Index Distribution

AbstractOptical diffraction tomography (ODT) applied to measurement of optical microelements is limited by low dynamic range, i.e., only objects with small deviations of refractive-index distribution can be measured. Therefore in this paper the limitations and errors of ODT are investigated throughout extensive numerical experiments. It is shown that these errors can be reduced by introduction of additional numerical focusing in the tomographic reconstruction algorithm. Additionally, new tomographic reconstruction algorithm using back propagation in reference medium for optical microelements measurement with known design is proposed. This hybrid reconstruction algorithm allows significant extension of ODT applicability in measurement of elements having large deviations of refractive-index distribution.

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