Eur. Phys. J. AP
Volume 5, Number 1, January 1999
|Page(s)||45 - 50|
|Published online||15 January 1999|
Sculptured thin film Šolc filters for optical sensing of gas concentration
Computational & Theoretical Materials Sciences Group (CATMAS),
Department of Engineering Science
and Mechanics, Pennsylvania State University, University Park, PA 16802–1401, USA
Accepted: 24 August 1998
Published online: 15 January 1999
The viability of sculptured thin film (STF) implementations of Šolc fan and folded filters for optical detection and determination of gas concentration is established. A nanoscopic–to–continuum model is devised for predicting the electromagnetic (optical) response of a STF Šolc filter whose void regions are filled with a chemically non–reacting gas. Ultra–narrow band–pass features in the transmission spectrum are shown to shift with the gas concentration.
PACS: 42.25.Lc – Birefringence / 42.79.Yd – Other optical elements, devices, and systems / 81.05.Zx – New materials: theory, design, and fabrication
© EDP Sciences, 1999
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