Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 11, 2016
|
|
---|---|---|
Article Number | 16009 | |
Number of page(s) | 11 | |
DOI | https://doi.org/10.2971/jeos.2016.16009 | |
Published online | 06 February 2016 |
Regular paper
Complex method for angular-spectral analysis of volume phase diffraction gratings recorded in photopolymers
1
Institute of Plasma Physics AS CR, v.v.i., Centre TOPTEC, Sobotecká 1660, 511-01, Turnov, Czech Republic
2
Czech Technical University in Prague, FNSPE, Department of Physical Electronics, Břá 7, 115-19, Prague 1, Czech Republic
3
Holoplus s.r.o., Nademlejnské 1, 19800 Prague 9, Czech Republic
a vojtisek@ipp.cas.cz
b kveton@holoplus.cz
c ivan.richter@fjfi.cvut.cz
Received:
14
December
2015
Revised:
15
January
2016
Photopolymer recording materials are nowadays widely used for recording of diffraction gratings and other diffraction elements. For obtaining the best performance of these diffraction gratings for desired applications, it is important to assess these gratings from many different perspectives. In this contribution, we present an experimental and characterization approach to an analysis of diffraction gratings recorded into photopolymer materials. This approach is able to provide a complex and very illustrative description of these gratings response and, with accordance to the theory, information about some important grating parameters, such as a spatial period, slant angle, etc., as well. This approach is based on the measurement of a grating response for a wide range of angles and wavelengths and then on the construction and subsequent analysis of maps in the angular-spectral plane. It is shown that the measurements are in a good agreement with the theoretical predictions based on either approximate (Kogelnik’s coupled wave theory) or rigorous (RCWA) techniques and that this approach provides complex and detailed characterization of the grating response which can be used for additional optimization or decision of applicability of measured sample gratings.
Key words: Photopolymers / diffraction gratings / angular-spectral maps / spectral selectivity / angular selectivity
© The Author(s) 2016. All rights reserved.
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