A Practical Approach to the Problem of the Absolute Phase in Speckle Interferometry

2004 ◽  
Vol 1 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Thorsten Siebert ◽  
Karsten Splitthof ◽  
Andreas Ettemeyer
Keyword(s):  
Speckle Interferometry ◽  
Practical Approach ◽  
Absolute Phase ◽  
The Absolute

Nanoscale range finding of subsurface structures by measuring the absolute phase lag of thermal wave

2010 ◽  
Vol 81 (5) ◽  
pp. 053701 ◽  
Author(s):  
Jaehun Chung ◽  
Kyeongtae Kim ◽  
Gwangseok Hwang ◽  
Ohmyoung Kwon ◽  
Joon Sik Lee ◽  
...  
Keyword(s):  
Thermal Wave ◽  
Phase Lag ◽  
Subsurface Structures ◽  
Range Finding ◽  
Absolute Phase ◽  
The Absolute ◽  
Nanoscale Range

Strong-field photoionization in the few-optical-cycle regime: the role of the absolute phase

2002 ◽  
Author(s):  
M. Nisoli ◽  
S. Stagira ◽  
E. Priori ◽  
G. Sansone ◽  
S. De Silvestri ◽  
...  
Keyword(s):  
Strong Field ◽  
Absolute Phase ◽  
Optical Cycle ◽  
The Absolute

An influence of the absolute phase of THz pulse on linear and nonlinear medium response

2011 ◽  
Author(s):  
Vyacheslav A. Trofimov ◽  
Svetlana A. Varentsova ◽  
Norbert Palka ◽  
Mieczyslaw Szustakowski ◽  
Tomasz Trzcinski ◽  
...  
Keyword(s):  
Nonlinear Medium ◽  
Absolute Phase ◽  
Linear And Nonlinear ◽  
The Absolute

scholarly journals High-resolution Three-dimensional Surface Imaging Microscope Based on Digital Fringe Projection Technique

2020 ◽  
Vol 20 (3) ◽  
pp. 139-144
Author(s):  
Cheng-Yang Liu ◽  
Tzu-Ping Yen ◽  
Chien-Wen Chen
Keyword(s):  
High Resolution ◽  
Imaging System ◽  
Three Dimensional ◽  
Fringe Projection ◽  
Surface Imaging ◽  
Projection Technique ◽  
Digital Fringe Projection ◽  
Absolute Phase ◽  
The Absolute ◽  
Fringe Patterns

AbstractThe three-dimensional (3-D) micro-scale surface imaging system based on the digital fringe projection technique for the assessments of microfiber and metric screw is presented in this paper. The proposed system comprises a digital light processing (DLP) projector, a set of optical lenses, a microscope, and a charge coupled device (CCD). The digital seven-step fringe patterns from the DLP projector pass through a set of optical lenses before being focused on the target surface. A set of optical lenses is designed for adjustment and size coupling of fringe patterns. A high-resolution CCD camera is employed to picture these distorted fringe patterns. The wrapped phase map is calculated by seven-step phase-shifting calculation from these distorted fringe patterns. The unwrapping calculation with quality guided path is introduced to compute the absolute phase values. The dimensional calibration methods are used to acquire the transformation between real 3-D shape and the absolute phase value. The capability of complex surface measurement for our system is demonstrated by using ISO standard screw M1.6. The experimental results for microfiber with 3 μm diameter indicate that the spatial and vertical resolutions can reach about 3 μm in our system. The proposed system provides a fast digital imaging system to examine the surface features with high-resolution for automatic optical inspection industry.

Strong-field photoionization in the few-optical-cycle regime: the role of the absolute phase

2003 ◽  
pp. 11-15
Author(s):  
Mauro Nisoli ◽  
Salvatore Stagira ◽  
Enrico Priori ◽  
Giuseppe Sansone ◽  
Sandro De Silvestri ◽  
...  
Keyword(s):  
Strong Field ◽  
Absolute Phase ◽  
Optical Cycle ◽  
The Absolute
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