Phase measurement of nonuniform phase-shifted interferograms using the frequency transfer function

Choque, Ivan; Servı́n, Manuel; Padilla, Moises; Asmad, Miguel; Ordoñes, Sotero

doi:10.1364/ao.58.004157

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…The phase measurement method for interferograms with a non-uniform phase shift is proposed in [12]. To implement this method, the phase shift between successive interferograms is measured, which is used to change the spectrum of the interferogram data.…”

Section: Methods Of Measuring the Phase Shift Angle Between Two Voltagesmentioning

confidence: 99%

“…Many works [1,[3][4][5][6][7][8][9][10][11][12][13][14] have been devoted to the improvement of methods for measuring the PSA between two voltages, the results of uncertainty assessment in the calibration of phase meters, and the State Standard of the PSA between two voltages in the frequency range from 10 Hz to 10 MHz are presented in [15][16][17][18]. In many works, the issues of automating various measurements and processing their results are solved, in particular with the use of the LabVIEW graphical software environment [19][20][21][22].…”

Section: Drawbacksmentioning

confidence: 99%

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Automation of Measurements on the State Standard of the Unit of Phase Shift Angle Between Two Voltages

Velychko¹,

Kulish²

2023

MEM

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The phase is one of the main parameters of the oscillatory process in electric circuits and contains two components – constant and variable. More often, it is not the actual phase that is measured, but the phase shift angle (PSA) between two oscillating processes (voltages or currents) of the same frequency in the range from 0 to 360˚. Then the PSA is equal to the difference between the constant components of the phases of the two oscillations and does not depend on the start of the time count. Most of the modern methods of measuring the phase and PSA are based on the methods of discretization and digital signal processing – complex Fourier transform, least squares, etc. There are many varieties and improvements of these methods, which have different characteristics of measurement accuracy. The LabVIEW graphical programming environment has already become a general- purpose programming environment. Advantages of LabVIEW include simple networking, implementation of common communication protocols, powerful toolkits for process control and data fitting, fast and simple user interface design, and an efficient code execution environment. The article presents the results of the automation of measurements on the State Standard of the PSA between two voltages in the frequency range from 5 Hz to 10 MHz. Automation of precision measurements of PSA using the Lab- VIEW software environment provides advantages in comparison with manual measurements, in particular, reducing the time of measurement and processing of its results by at least three times. This ensures an increase in the productivity of metrological works; increasing their efficiency and quality, and the possibility of increasing the number of measurements (up to 1000), which allows for improve the root mean square deviation of not less than one and a half times, and reduce the overall standard measurement uncertainty, respectively.

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Section: Methods Of Measuring the Phase Shift Angle Between Two Voltagesmentioning

confidence: 99%

Section: Drawbacksmentioning

confidence: 99%

Automation of Measurements on the State Standard of the Unit of Phase Shift Angle Between Two Voltages

Velychko¹,

Kulish²

2023

MEM

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“…Conventional interferometric configurations using a monochromatic or white light design such as Michelson [14][15][16], Twyman-Green [17][18][19], Fabry-Perot [20], Fizeau [19,21] are some of the typical arrangements used for surface profiling [22][23][24][25][26] and measuring the phase variations over the sample. In Michelson, Mach-Zehnder [16] and Linnik configurations [27,28], the object and the reference beams travel along paths that are not common to both the interfering beams resulting in the necessity of vibration isolation platforms.…”

Section: Introductionmentioning

confidence: 99%

Wire grid polarizer based in-line laser interferometer for macroscopic and microscopic phase estimation of transmissive and reflective phase samples

Sengupta

Bhattacharya

2023

Phys. Scr.

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This work describes a full-field and near-common-path in-line laser interferometer and interferometric microscope utilizing a wire-grid polarizer (WGP) placed normally on the laser beam illuminating the sample. The WGP serves the dual purpose of a beam splitter and a polarization separator where the reference and sample beams reflected and transmitted from it respectively are orthogonally polarized so that, unlike other conventional interferometers, polarization phase shifting is inherent in its architecture. This arrangement presents experimental results showing quantitative phase analysis of transparent and reflecting phase samples

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Design and Assessment of Phase-Shifting Algorithms in Optical Interferometer

Kim

Jeon

Kim

et al. 2022

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Phase measurement of nonuniform phase-shifted interferograms using the frequency transfer function

Cited by 6 publications

References 24 publications

Automation of Measurements on the State Standard of the Unit of Phase Shift Angle Between Two Voltages

Automation of Measurements on the State Standard of the Unit of Phase Shift Angle Between Two Voltages

Wire grid polarizer based in-line laser interferometer for macroscopic and microscopic phase estimation of transmissive and reflective phase samples

Design and Assessment of Phase-Shifting Algorithms in Optical Interferometer

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