Design of superachromatic quarter-wave retarders in a broad spectral range



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Herrera Fenández, José María and Vilas, José Luis and Sánchez Brea, Luis Miguel and Bernabeu Martínez, Eusebio (2015) Design of superachromatic quarter-wave retarders in a broad spectral range. Applied optics, 54 (33). pp. 9758-9762. ISSN 1559-128X

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A superachromatic quarter-wave retarder using an arbitrary number of waveplates in a broadband spectral range has been proposed. Their design is based on the optimization of a merit function, the achromatism degree (AcD), which represents a global behavior metric for the retardation. By means of this technique, the thickness and azimuth of each waveplate is determined. The achromatism degree is a measure of the distance between the overall retardation and a target retardation weighted by the spectrum of the incident light. We report on a particular case where all waveplates are made of quartz. As application examples, the design of a quarter-wave retarder using two, three, and four waveplates in the spectral ranges of 500-700 nm and 400-1000 nm was studied. The numerical results show that for these ranges, the best designs obtained present a maximum difference of 0.013 degrees and 0.010 degrees with respect to the target retardation, respectively. In addition, an analysis of their achromatic stability is presented. These results can be applied in the aerospace industry, spectroscopic ellipsometry, and spectrogoniometry, among others.

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© 2015 Optical Society of America.
The authors thank Maite Irigoyen for her encouragement and many useful comments during the preparation of this work.
Funding: Direccion General de Universidades e Investigacion, Comunidad de Madrid (Spain) (SEGVAUTO-TRIES CM S2013/MIT-2713); Ministerio de Economia y Competitividad (MINECO) (DPI2011-27851).

Uncontrolled Keywords:Plates; Birefringence; Dispersion; Waveplate; Calculus; Crystal; Light
Subjects:Sciences > Physics > Optics
ID Code:35472
Deposited On:02 Feb 2016 15:27
Last Modified:03 Feb 2016 08:32

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