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Title:A study of novel mid-infrared optical devices: wave plates and tunable filters
Author(s):Taylor, Andrew
Advisor(s):Wasserman, Daniel M.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):Mid-Infrared
Wave Plate
Birefringence
Filter
Subwavelength grating
Plasmons
Abstract:The mid-infrared wavelength range is important for both molecular sensing and thermal imaging. However, many optical devices that are common in the visible range are not as accessible in the mid-infrared. In this thesis, we look to partially address this problem by proposing two novel structures using subwavelength gratings. First, we look at a wave plate design that uses a physical path length difference to impose a phase shift between the components of incident light as an alternative to costly birefringent crystals. Then, we look at a crossed grating structure that serves as a narrowband filter due to its extraordinary transmission. We also propose a way to make the filter structure actively tunable.
Issue Date:2013-05-24
URI:http://hdl.handle.net/2142/44174
Rights Information:Copyright 2013 Andrew Taylor
Date Available in IDEALS:2013-05-24
Date Deposited:2013-05


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