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Optical Engineering

Three-element variable retarder for monochromatic light
Author(s): Arijit Saha; Kallol Bhattacharya; Ajoy Chakraborty
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Paper Abstract

A technique is described for the continuous variation of the resultant retardance and effective privileged directions of a cascaded system of three optical retarders. The system consists of a rotatable retarder sandwiched between two fixed, identical, parallel retarders. The primary aim of the study was to develop a simple technique for a variable retarder for monochromatic light, but the robustness of the system for a narrow band on either side of the design wavelength was also studied. Simulated plots show that a linear variation of the effective retardance from 0 to 2Π is achievable, as is a linear variation of the effective azimuth from 0 to Π. It is also shown that these two parameters may be varied independently of each other.

Paper Details

Date Published: 1 July 2010
PDF: 4 pages
Opt. Eng. 49(7) 073004 doi: 10.1117/1.3462065
Published in: Optical Engineering Volume 49, Issue 7
Show Author Affiliations
Arijit Saha, B.P. Poddar Institute of Management & Technology (India)
Kallol Bhattacharya, Univ. of Calcutta (India)
Ajoy Chakraborty, Univ. of Calcutta (India)

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