Measuring the wedge of flat optical windows

Yago Arosa; Daniel Díaz Rivas; Elena López Lago; Raúl de la Fuente

doi:10.1016/j.optcom.2021.127257

Measuring the wedge of flat optical windows

Yago Arosa, Daniel Díaz Rivas, Elena López Lago, Raúl de la Fuente

Research output: Contribution to journal › Article › peer-review

Abstract

A novel interferometric technique to measure small wedge angle of transparent windows is proposed. The technique is based on the measurement of the shift of the interference pattern generated by two sheared copies of a laser beam after crossing the optical wedge. A simple lens is used to combine the two beams in their focal plane and measurements are taken for different shears. It is not necessary to perform a spatial filtering of the laser beam since correlations are used to determine the parameters of the experiment. A sample with a wedge slightly greater than one minute is used to illustrate the method.

Original language	English
Article number	127257
Journal	Optics Communications
Volume	498
DOIs	https://doi.org/10.1016/j.optcom.2021.127257
Publication status	Published - 2021 Nov 1
Externally published	Yes

Bibliographical note

Funding Information:
Xunta de Galicia, Conseller?a de Educaci?n, Universidades e FP, Grant GRC number ED431E2018/08.

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

Free keywords

Cyclic interferometer
Fringe spacing
Shear
Wedge

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10.1016/j.optcom.2021.127257

Cite this

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title = "Measuring the wedge of flat optical windows",

abstract = "A novel interferometric technique to measure small wedge angle of transparent windows is proposed. The technique is based on the measurement of the shift of the interference pattern generated by two sheared copies of a laser beam after crossing the optical wedge. A simple lens is used to combine the two beams in their focal plane and measurements are taken for different shears. It is not necessary to perform a spatial filtering of the laser beam since correlations are used to determine the parameters of the experiment. A sample with a wedge slightly greater than one minute is used to illustrate the method.",

keywords = "Cyclic interferometer, Fringe spacing, Shear, Wedge",

author = "Yago Arosa and {D{\'i}az Rivas}, Daniel and {L{\'o}pez Lago}, Elena and {de la Fuente}, Ra{\'u}l",

note = "Funding Information: Xunta de Galicia, Conseller?a de Educaci?n, Universidades e FP, Grant GRC number ED431E2018/08.",

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doi = "10.1016/j.optcom.2021.127257",

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T1 - Measuring the wedge of flat optical windows

AU - Arosa, Yago

AU - Díaz Rivas, Daniel

AU - López Lago, Elena

AU - de la Fuente, Raúl

N1 - Funding Information: Xunta de Galicia, Conseller?a de Educaci?n, Universidades e FP, Grant GRC number ED431E2018/08.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - A novel interferometric technique to measure small wedge angle of transparent windows is proposed. The technique is based on the measurement of the shift of the interference pattern generated by two sheared copies of a laser beam after crossing the optical wedge. A simple lens is used to combine the two beams in their focal plane and measurements are taken for different shears. It is not necessary to perform a spatial filtering of the laser beam since correlations are used to determine the parameters of the experiment. A sample with a wedge slightly greater than one minute is used to illustrate the method.

AB - A novel interferometric technique to measure small wedge angle of transparent windows is proposed. The technique is based on the measurement of the shift of the interference pattern generated by two sheared copies of a laser beam after crossing the optical wedge. A simple lens is used to combine the two beams in their focal plane and measurements are taken for different shears. It is not necessary to perform a spatial filtering of the laser beam since correlations are used to determine the parameters of the experiment. A sample with a wedge slightly greater than one minute is used to illustrate the method.

KW - Cyclic interferometer

KW - Fringe spacing

KW - Shear

KW - Wedge

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DO - 10.1016/j.optcom.2021.127257

M3 - Article

AN - SCOPUS:85109216036

SN - 0030-4018

VL - 498

JO - Optics Communications

JF - Optics Communications

M1 - 127257

ER -

Measuring the wedge of flat optical windows

Abstract

Bibliographical note

Subject classification (UKÄ)

Free keywords

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