Title

Design And Demonstration Of An Infrared Meanderline Phase Retarder

Keywords

Frequency selective surfaces; Infrared measurements; Polarization

Abstract

We compare design and measurements for a single-layer meanderline quarter-wave phase retarder, operating across the wavelength range from 8 to 12 micrometers (25 to 37.5 THz) in the infrared. The structure was fabricated using direct-write electron-beam lithography. With measured frequency-dependent material properties incorporated into a periodic-moment-method model, reasonable agreement is obtained for the spectral dependence of axial ratio and phase delay. As expected from theory, the single-layer meanderline design has relatively low throughput (23%), but with extension to multiple-layer designs, the meanderline approach offers significant potential benefits as compared to conventional birefringent crystalline waveplates in terms of spectral bandwidth, angular bandwidth, and cost. Simple changes in the lithographic geometry will allow designs to be developed for specific phase retardations over specified frequency ranges in the infrared, terahertz, or millimeter-wave bands, where custom-designed waveplates are not commercially available. © 2007 IEEE.

Publication Date

11-1-2007

Publication Title

IEEE Transactions on Antennas and Propagation

Volume

55

Issue

11 I

Number of Pages

2983-2988

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TAP.2007.908369

Socpus ID

36849068403 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/36849068403

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