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Measuring the wedge of flat optical windows

Arosa, Yago ; Díaz Rivas, Daniel ; López Lago, Elena and de la Fuente, Raúl (2021) In Optics Communications 498.
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.

Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cyclic interferometer, Fringe spacing, Shear, Wedge
in
Optics Communications
volume
498
article number
127257
publisher
Elsevier
external identifiers
  • scopus:85109216036
ISSN
0030-4018
DOI
10.1016/j.optcom.2021.127257
language
English
LU publication?
no
additional info
Funding Information: Xunta de Galicia, Conseller?a de Educaci?n, Universidades e FP, Grant GRC number ED431E2018/08.
id
ed4f8434-e5af-422c-9457-70901dc9168c
date added to LUP
2021-08-16 09:19:23
date last changed
2022-04-27 03:09:31
@article{ed4f8434-e5af-422c-9457-70901dc9168c,
  abstract     = {{<p>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.</p>}},
  author       = {{Arosa, Yago and Díaz Rivas, Daniel and López Lago, Elena and de la Fuente, Raúl}},
  issn         = {{0030-4018}},
  keywords     = {{Cyclic interferometer; Fringe spacing; Shear; Wedge}},
  language     = {{eng}},
  month        = {{11}},
  publisher    = {{Elsevier}},
  series       = {{Optics Communications}},
  title        = {{Measuring the wedge of flat optical windows}},
  url          = {{http://dx.doi.org/10.1016/j.optcom.2021.127257}},
  doi          = {{10.1016/j.optcom.2021.127257}},
  volume       = {{498}},
  year         = {{2021}},
}