Dual plane on-axis digital holography with dual wavelength phase unwrapping

2017 ◽  
Author(s):  
Spozmai Panezai ◽  
Jie Zhao ◽  
Yunxin Wang ◽  
Dayong Wang ◽  
Lu Rong
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Dual Wavelength ◽  
Dual Plane

Investigation on Phase Unwrapping in Dual-Wavelength Digital Holography

2012 ◽  
Vol 32 (10) ◽  
pp. 1009001
Author(s):  
王羽佳 Wang Yujia ◽  
江竹青 Jiang Zhuqing ◽  
高志瑞 Gao Zhirui ◽  
蔡文苑 Cai Wenyuan ◽  
伍江涛 Wu Jiangtao
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Dual Wavelength

Single-shot dual-wavelength phase unwrapping in parallel phase-shifting digital holography

2014 ◽  
Vol 39 (8) ◽  
pp. 2374 ◽  
Author(s):  
Yonghee Lee ◽  
Yasunori Ito ◽  
Tatsuki Tahara ◽  
Junichi Inoue ◽  
Peng Xia ◽  
...  
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Phase Shifting ◽  
Dual Wavelength ◽  
Single Shot

Linear programming phase unwrapping for dual-wavelength digital holography

2017 ◽  
Vol 56 (3) ◽  
pp. 424 ◽  
Author(s):  
Zhaomin Wang ◽  
Jiannan Jiao ◽  
Weijuan Qu ◽  
Fang Yang ◽  
Hongru Li ◽  
...  
Keyword(s):  
Linear Programming ◽  
Digital Holography ◽  
Phase Unwrapping ◽  
Dual Wavelength

Dual wavelength digital holography phase unwrapping by linear regression

2011 ◽  
Author(s):  
Alexander Khmaladze ◽  
Rebecca L. Matz ◽  
Chi Zhang ◽  
Joshua Jasensky ◽  
Mark M. Banaszak Holl ◽  
...  
Keyword(s):  
Linear Regression ◽  
Digital Holography ◽  
Phase Unwrapping ◽  
Dual Wavelength

Phase Unwrapping in Digital Holography by Dual-wavelength Method

2011 ◽  
Author(s):  
Yujia Wang ◽  
Zhuqing Jiang ◽  
Guofeng Cheng ◽  
Jiangtao Wu ◽  
Shiquan Tao
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Dual Wavelength

scholarly journals Combined Reduced Phase Dual-Directional Illumination Digital Holography and Speckle Displacements for Shape Measurement

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Davood Khodadad
Keyword(s):  
Phase Difference ◽  
Digital Holography ◽  
Relative Phase ◽  
Groove Depth ◽  
Phase Unwrapping ◽  
Shape Measurement ◽  
Phase Ambiguity ◽  
Holographic Method ◽  
Height Range ◽  
Phase Differences

We present a digital holographic method to increase height range measurement with a reduced phase ambiguity using a dual-directional illumination. Small changes in the angle of incident illumination introduce phase differences between the recorded complex fields. We decrease relative phase difference between the recorded complex fields 279 and 139 times by changing the angle of incident 0.5° and 1°, respectively. A two cent Euro coin edge groove is used to measure the shape. The groove depth is measured as ≈300  μm. Further, numerical refocusing and analysis of speckle displacements in two different planes are used to measure the depth without a use of phase unwrapping process.

Single-shot, dual-wavelength digital holography based on polarizing separation

2011 ◽  
Vol 50 (19) ◽  
pp. 3360 ◽  
Author(s):  
D. G. Abdelsalam ◽  
Robert Magnusson ◽  
Daesuk Kim
Keyword(s):  
Digital Holography ◽  
Dual Wavelength ◽  
Single Shot
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