Laser beam machined free‐standing terahertz metamaterials

Autor:	Martin Koch, Norman Born, Ibraheem Al-Naib, R. Gente
Rok vydání:	2015
Předmět:	Materials science Laser ablation Terahertz radiation business.industry Far-infrared laser Laser beam machining Polarizer law.invention Optics Band-pass filter law Electrical and Electronic Engineering Photolithography Thin film business
Zdroj:	Electronics Letters. 51:1012-1014
ISSN:	1350-911X 0013-5194
DOI:	10.1049/el.2015.0655
Popis:	The use of laser ablation of a thin metal film, which allows for rapid prototyping of various free-standing terahertz devices, is reported. The technique will provide a simple way to fabricate devices without complicated photolithography procedures. This could be a solution for a multitude of new optical elements for the terahertz regime. The fabricated samples are free-standing films and, hence, benefit from the absence of a supporting dielectric substrate, which could induce dispersion, losses or alter the reflection properties. Three devices are demonstrated: a wire-grid polariser, a polarisation converter and bandpass filters, and their performance is characterised.
Databáze:	OpenAIRE
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