An automated self-marking phase-shifting system for measuring the full field phase distribution of interference fringe patterns

2000 ◽  
Vol 32 (4) ◽  
pp. 225-230 ◽  
Author(s):  
M.J. Huang ◽  
L.Y. Chou
Keyword(s):  
Interference Fringe ◽  
Phase Distribution ◽  
Phase Shifting ◽  
Field Phase ◽  
Full Field ◽  
Fringe Patterns

3D information detection with novel five composite fringe patterns

2017 ◽  
Vol 31 (19-21) ◽  
pp. 1740088 ◽  
Author(s):  
Huaxia Deng ◽  
Ji Deng ◽  
Mengchao Ma ◽  
Jin Zhang ◽  
Liandong Yu ◽  
...  
Keyword(s):  
Relative Phase ◽  
Three Dimensional ◽  
Phase Shifting ◽  
Full Field ◽  
Full Field Measurement ◽  
Phase Map ◽  
Phase Shifting Method ◽  
Information Detection ◽  
Fringe Patterns ◽  
3D Information

A novel phase unwrapping method with five composite fringe patterns and phase-shifting method was proposed for three-dimensional information detection. The composite fringe patterns were composed of phase-shifted sinusoidal and stair phase-coding fringe patterns. The fringe patterns are five step phase-shifted. The relative phase and the stair code-words can be obtained simultaneously based on the five step phase-shifting algorithm. The monochrome composite structure has the improvement on the measurement speed and has the potential of solving the problem of color coupling and color imbalance. Combined with the modified minimum phase map theory, this method can provide more code-words for the full field measurement. Simulation and experimental results were presented in the final part to verify the flexibility and feasibility of the proposed method.

scholarly journals Visualization of internal structure and internal stress in visibly opaque objects using full-field phase-shifting terahertz digital holography

2019 ◽  
Vol 27 (23) ◽  
pp. 33854 ◽  
Author(s):  
Masatomo Yamagiwa ◽  
Takeo Minamikawa ◽  
Fui Minamiji ◽  
Takahiko Mizuno ◽  
Yu Tokizane ◽  
...  
Keyword(s):  
Internal Stress ◽  
Internal Structure ◽  
Digital Holography ◽  
Phase Shifting ◽  
Field Phase ◽  
Full Field

Surface Plasmon Resonance Bio-Sensor with Full Field Phase Detection

2008 ◽  
Vol 381-382 ◽  
pp. 349-352
Author(s):  
Ju Yi Lee ◽  
T.K. Chou ◽  
H.C. Shih ◽  
Cheng Chih Hsu
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Phase Difference ◽  
Plasmon Resonance ◽  
Phase Distribution ◽  
Refractive Index Change ◽  
Phase Detection ◽  
Field Phase ◽  
Full Field ◽  
Polarization Interferometry

A full field phase detection system for surface plasmon resonance (SPR) bio-sensor is presented. The phase difference variation between s and p polarization resulting from the SPR was detected by the polarization interferometry. In the polarization interferometry, the light reflected from the SPR sensor was divided into four phase quardrature parts by polarization components. By means of an algorithm similar to phase shifting interferometry, the phase distribution of SPR bio-sensor was obtained. We have successfully detected the phase difference variation with 0.07º resolution within 1×1 mm2 full field range. The corresponding detection limit of the refractive index change is about 1×10-7.

Wavefront detection method for orbital angular momentum modes based on conformal mapping-spatial phase shifting interferometry

2021 ◽  
Author(s):  
Dong Yang ◽  
Xiaoning Hu ◽  
Jiantai Dou ◽  
Zhongming Yang ◽  
Zhigang Zhao ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Conformal Mapping ◽  
Orbital Angular Momentum ◽  
Phase Distribution ◽  
Phase Shifting ◽  
Free Space Optical ◽  
Spatial Phase ◽  
Phase Shifting Interferometry ◽  
Space Optical Communication ◽  
Fringe Patterns

Abstract The orbital angular momentum (OAM) of light has garnered significant interest in recent years owing to its various applications, and extensive creative research has been conducted to generate OAM. However, the particular helical phase structure of an optical vortex leads to non-smooth and discontinuous phase profiles and hinders the accurate recovery of the phase distribution of the vortex beam. Significantly, the existence of a wavefront dislocation leads to the failure of the traditional phase unwrapping algorithm. At the same time, it is essential to detect the wavefront of OAM modes in real-time for free-space optical communication and optical precision measurement. Therefore, we designed conformal mapping-spatial phase-shifting interferometry and achieved rapid and high-precision wavefront measurements for the OAM modes. The wavefront of the OAM modes with a topological charge of 1,2,4 and 6 were measured, respectively. The results were significantly consistent with the anticipated results based on simulations. This study revealed the mathematical mechanism behind the forked fringe patterns and presented a method for demodulating the helical wavefront from the forked fringe patterns.

Quantitative interferometric microscopy with improved full-field phase aberration compensation

2014 ◽  
Vol 53 (11) ◽  
pp. 113105 ◽  
Author(s):  
Liang Xue ◽  
Shouyu Wang ◽  
Keding Yan ◽  
Nan Sun ◽  
Zhenhua Li ◽  
...  
Keyword(s):  
Field Phase ◽  
Phase Aberration ◽  
Full Field
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