Research on object-plane constraints and hologram expansion in phase retrieval algorithms for continuous-wave terahertz inline digital holography reconstruction

2014 ◽  
Vol 53 (30) ◽  
pp. 7112 ◽  
Author(s):  
Jiaqi Hu ◽  
Qi Li ◽  
Shanshan Cui
Keyword(s):  
Digital Holography ◽  
Phase Retrieval ◽  
Continuous Wave ◽  
Object Plane ◽  
Retrieval Algorithms

Phase-shifting digital holography with an unknown reference beam

2021 ◽  
Author(s):  
Roghayeh Yazdani ◽  
Hamidreza Fallah
Keyword(s):  
Digital Holography ◽  
Phase Retrieval ◽  
Reference Beam ◽  
Phase Shifting ◽  
Retrieval Algorithm ◽  
Reference Field ◽  
Digital Holograms ◽  
Noisy Conditions ◽  
Phase Retrieval Algorithm

In digital holography, errors of the reference field degrade the quality of the reconstructed object field. In this paper, we propose an effective method in phase-shifting digital holography in which the reference field does not need to be known and perfect. The unknown complex amplitudes of both reference and object fields are derived simultaneously. The method employs only five digital holograms and a single execution of a phase retrieval algorithm. So, the required measurements and algorithm executions in this method are fewer than those in other methods; it suggests a simpler and faster method. The effectiveness of the suggested method is indicated by simulation, under noise-free and noisy conditions. Moreover, the capability of the method to extract full information about the phase singularities in both fields is demonstrated.

Continuous-wave terahertz multi-plane in-line digital holography

2017 ◽  
Vol 94 ◽  
pp. 76-81 ◽  
Author(s):  
Haochong Huang ◽  
Dayong Wang ◽  
Weihua Li ◽  
Lu Rong ◽  
Zachary D. Taylor ◽  
...  
Keyword(s):  
Digital Holography ◽  
Continuous Wave

Continuous-wave terahertz diffraction tomography based on digital holography

2021 ◽  
Author(s):  
Xiaoyu Jin ◽  
Jie Zhao ◽  
Dayong Wang ◽  
Yunxin Wang ◽  
Lu Rong
Keyword(s):  
Digital Holography ◽  
Continuous Wave ◽  
Diffraction Tomography

Iterative phase retrieval algorithms Part II: Attacking optical encryption systems

2015 ◽  
Vol 54 (15) ◽  
pp. 4709 ◽  
Author(s):  
Changliang Guo ◽  
Shi Liu ◽  
John T. Sheridan
Keyword(s):  
Phase Retrieval ◽  
Optical Encryption ◽  
Retrieval Algorithms

Continuous-wave off-axis and in-line terahertz digital holography with phase unwrapping and phase autofocusing

2018 ◽  
Vol 426 ◽  
pp. 612-622 ◽  
Author(s):  
Haochong Huang ◽  
Dayong Wang ◽  
Lu Rong ◽  
Spozmai Panezai ◽  
Donglei Zhang ◽  
...  
Keyword(s):  
Digital Holography ◽  
Continuous Wave ◽  
Phase Unwrapping

Phase retrieval without unwrapping by single-shot dual-wavelength digital holography

2014 ◽  
Vol 16 (12) ◽  
pp. 125409 ◽  
Author(s):  
Junwei Min ◽  
Baoli Yao ◽  
Meiling Zhou ◽  
Rongli Guo ◽  
Ming Lei ◽  
...  
Keyword(s):  
Digital Holography ◽  
Phase Retrieval ◽  
Dual Wavelength ◽  
Single Shot
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