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Machinable ceramic for high performance and compact THz optical components

Klein, Andreas K.; Hammler, Jonathan; Balocco, Claudio; Gallant, Andrew J.

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Authors

Andreas K. Klein

Claudio Balocco



Abstract

The properties of Shapal Hi-M Soft, an aluminum nitride based ceramic, as a material for THz optical components are investigated and compared with other ceramic materials. Shapal is a low-cost and machinable ceramic with a high-refractive index and low losses at THz frequencies: n = 2.65, α = 0.4 cm−1. To demonstrate the shaping capabilities, a Fresnel lens is fabricated with a micro-milling system. Additionally, a prism as an example of a bulk component is demonstrated. Both a THz time domain spectrometer and a vector network analyzer (0.75–1.1 THz) are used for the optical characterization and the absorption coefficient is precisely obtained in the VNA frequency range.

Citation

Klein, A. K., Hammler, J., Balocco, C., & Gallant, A. J. (2018). Machinable ceramic for high performance and compact THz optical components. Optical Materials Express, 8(7), 1968-1975. https://doi.org/10.1364/ome.8.001968

Journal Article Type Article
Acceptance Date Jun 18, 2018
Online Publication Date Jun 26, 2018
Publication Date Jun 26, 2018
Deposit Date Jun 21, 2018
Publicly Available Date Jun 29, 2018
Journal Optical Materials Express
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 8
Issue 7
Pages 1968-1975
DOI https://doi.org/10.1364/ome.8.001968

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.





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