Sub-pixel registration method for phase diversity wavefront sensor using spatial light modulator

2010 ◽  
Author(s):  
Norihide Miyamura
Keyword(s):  
Spatial Light Modulator ◽  
Wavefront Sensor ◽  
Light Modulator ◽  
Registration Method ◽  
Phase Diversity

Quantitative analysis on phase diversity technique based on liquid crystal spatial light modulator

2017 ◽  
Vol 32 (3) ◽  
pp. 234-239 ◽  
Author(s):  
李小平 LI Xiao-ping ◽  
胡五生 HU Wu-sheng ◽  
于洪丽 YU Hong-li ◽  
徐梓浩 XU Zi-hao ◽  
张佩光 ZHANG Pei-guang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Quantitative Analysis ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Phase Diversity ◽  
Diversity Technique

scholarly journals Аппаратно-алгоритмическое обеспечение корреляционного детектирования в голографических датчиках волнового фронта

2019 ◽  
Vol 127 (10) ◽  
pp. 563
Author(s):  
П.А. Ручка ◽  
Н.М. Вереникина ◽  
И.В. Гриценко ◽  
Е.Ю. Злоказов ◽  
М.С. Ковалев ◽  
...  
Keyword(s):  
Spatial Light Modulator ◽  
Wavefront Sensor ◽  
Practical Implementation ◽  
Light Modulator

AbstractAn algorithm that automatically calculates aberrations in the holographic wavefront sensor scheme previously proposed by the authors is described, which enables measuring aberrations by means of iterative generation of holograms on a phase spatial light modulator (SLM). The practical implementation of this algorithm on the basis of the feedback of the camera and SLM is given. Using the proposed algorithm, defocusing was measured with an accuracy of λ/160.

scholarly journals Optical detection of values of separate aberrations using a multi-channel filter matched with phase Zernike functions

2021 ◽  
Vol 45 (4) ◽  
pp. 525-533
Author(s):  
P.A. Khorin ◽  
S.G. Volotovskiy ◽  
S.N. Khonina
Keyword(s):  
Numerical Simulation ◽  
Spatial Light Modulator ◽  
Optical Detection ◽  
Diffraction Order ◽  
Maximum Intensity ◽  
Wavefront Sensor ◽  
Light Modulator ◽  
Correlation Peak ◽  
Wavefront Aberrations ◽  
Channel Filter

The use of a multichannel wavefront sensor matched with phase Zernike functions to determine the type and magnitude of aberration in the analyzed wavefront is investigated. The approach is based on stepwise compensation of wavefront aberrations based on a dynamically tunable spatial light modulator. As criteria for successful detection, not only the magnitude of the correlation peak, but also the maximum intensity, compactness, and orientation of the distribution in each diffraction order are considered. On the basis of numerical simulation, the efficiency of the proposed approach is shown for detecting both weak and strong (up to a wavelength) wavefront aberrations.

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