Terahertz lenses made by compression molding of micropowders

Benedikt Scherger, Maik A Scheller, Christian Jansen, Martin Koch, Karin Wiesauer

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

We present a simple and versatile approach for fabricating terahertz lenses based on compression molding of micropowder polymer materials in a tabletop hydraulic press. To demonstrate the feasibility of this approach, a biconvex lens shape is calculated using a ray-tracing algorithm and lenses based on two different micropowders are fabricated. As the powder materials have different refractive indices, the resulting lenses share the same geometric shape but differ in their respective focal length. The focusing properties of the lenses are evaluated by transversal and sagittal beam profile measurements in a fibercoupled terahertz time-domain spectroscopy system, confirming the excellent imaging qualities of the compression molded lenses.

Original languageEnglish (US)
Pages (from-to)2256-2262
Number of pages7
JournalApplied Optics
Volume50
Issue number15
DOIs
Publication statusPublished - May 20 2011
Externally publishedYes

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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