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Proceedings Article

Spectral characterization and tuning with liquid-crystal retarders

[+] Author Affiliations
María del Mar Sánchez-López, Ignacio Moreno

Univ. Miguel Hernández de Elche (Spain)

Asticio Vargas

Univ. de la Frontera (Chile)

Pascuala García-Martínez

Univ. de València (Spain)

Proc. SPIE 9598, Optics and Photonics for Information Processing IX, 95980E (September 9, 2015); doi:10.1117/12.2188629
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From Conference Volume 9598

  • Optics and Photonics for Information Processing IX
  • Abdul A. S. Awwal; Khan M. Iftekharuddin; Mohammad A. Matin; Mireya García Vázquez; Andrés Márquez
  • San Diego, California, United States | August 09, 2015

abstract

An accurate characterization of the retardance function of liquid-crystal retarders (LCR) is essential for a proper use of instruments that include these devices. In this paper a simple technique to characterize the retardance of a LCR, both as a function of wavelength and applied voltage, is presented. With the proposed analysis we can describe the spectral modulation properties of the device using few parameters. The method is then extended to the case of non-normal incidence, thus allowing to distinguish between the extraordinary and ordinary axes. The accounting of Fabry-Perot interference effects are used to obtain a very accurate determination of the spectral phase shifts. Finally, such a full characterization of the LCR retardance is applied to a liquid-crystal spatial light modulator and an optical architecture is designed where the spectral content of the light beam can be engineered at will. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

María del Mar Sánchez-López ; Ignacio Moreno ; Asticio Vargas and Pascuala García-Martínez
" Spectral characterization and tuning with liquid-crystal retarders ", Proc. SPIE 9598, Optics and Photonics for Information Processing IX, 95980E (September 9, 2015); doi:10.1117/12.2188629; http://dx.doi.org/10.1117/12.2188629


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