Calibration of Wavefront Phase Image Using Phase-Shifting Iteration Algorithm in Quadriwave Lateral Shearing Interferometry

Cui, Bochuan; Chen, Tao; Wang, Jianli; Yao, Kainan

doi:10.3938/jkps.72.359

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…In order to solve the above drawbacks, Yang Mu, Hou Lizhou and others proposed a stochastic phase-shifted phase solution method based on least squares iteration, whereas running computing time will be increased obviously and phase extraction accuracy will mostly be lowered when interference fringe graphs with lots of pixels are available to be dealt with in the iterative operation period [3,11,12]. In this paper, the iterative algorithm is used to solve the phase, and it is improved and deeply researched, and a high efficient and accurate phase extraction algorithm is proposed, which differs from the traditional method in the study of phase extraction with random sampling to simplify operation and improve accuracy [13][14][15][16]. In the measurement process, the algorithm selectively samples the original interference fringe image, which ensures that all pixel points of the iterative operation are valid, thus lessening the amount of data [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Measurement of step surface contour based on variable sampling phase shift interference phase extraction algorithm based on selective sampling

Zhang

Huang

Xiong

2020

Preprint

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Variable frequency phase shift interferometry is widely applied in optical precision measurement, with the accuracy of phase extraction’s direct impact on that of phase shift interferometry. In the variable-frequency phase-shift interferometry, the commonly used phase-shifting devices are prone to phase shift errors, because the ordinary equal-step phase extraction algorithm, which can be merely used to measure simple and smooth surface, influences the accuracy of phase extraction resulting in measuring error, and causes inefficiency led by the long time the iterative process lasts for when applied in complex stepped surfaces measurement. As a sort of step-by-step phase-shifting phase extraction algorithm based on selective sampling is used to measure the step surface contour, the interference image is firstly sampled at equal intervals to reduce the iterative calculation, and in view of the fact that the phase calibration of the test system is not required in this algorithm, the measured phase is given by using the alternating iterative method despite the unknown phase and unknown phase shift amount. The phase extraction accuracy and iteration time among traditional iterative algorithm, four-step phase shift algorithm and the variable phase shift phase interpolation algorithm based on selective sampling are compared in the simulation and experiment. It is shown that the variable frequency phase shifting interference phase extraction algorithm based on selective sampling has shorter operation time, less error and higher accuracy than traditional iterative algorithm in measuring complex step surface.

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Section: Introductionmentioning

confidence: 99%

Measurement of step surface contour based on variable sampling phase shift interference phase extraction algorithm based on selective sampling

Zhang

Huang

Xiong

2020

Preprint

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A technology of invariant feature extraction of Uav remote sensing image based on fuzzy fractional order function

Yue

Wang

et al. 2021

Arab J Geosci

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Absolutely interferometric calibration of phase liquid crystal spatial light modulators using honeycomb gratings composited with Billet-split Fresnel zone plates

Wang,

Shan,

Zhang

2024

Appl. Opt.

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The traditional interferometric calibration of phase spatial light modulators (SLM) based on interference fringes shift is easily disturbed due to environmental vibration. Here a kind of absolutely interferometric calibration of phase SLM is investigated to eliminate the disturbance using dual honeycomb gratings composited with Billet-split Fresnel zone plates (BsFZP), in which honeycomb gratings split an incident beam into three beams and the first two beams are interfered by BsFZP while the last beam is chosen as the absolute reference point. The experiments on both 532 and 632.8 nm incident wavelengths were separately carried out, and the measuring accuracy was proved by a SID4 wavefront sensor. The proposed high-accuracy calibration provided the basis for SLM application scenarios with high precision.

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Calibration of Wavefront Phase Image Using Phase-Shifting Iteration Algorithm in Quadriwave Lateral Shearing Interferometry

Cited by 3 publications

References 15 publications

Measurement of step surface contour based on variable sampling phase shift interference phase extraction algorithm based on selective sampling

Measurement of step surface contour based on variable sampling phase shift interference phase extraction algorithm based on selective sampling

A technology of invariant feature extraction of Uav remote sensing image based on fuzzy fractional order function

Absolutely interferometric calibration of phase liquid crystal spatial light modulators using honeycomb gratings composited with Billet-split Fresnel zone plates

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