Porous Silica Enrichment Films on Integrated Waveguides for Broadband Mid-IR Spectroscopic Trace Analysis

Bettina Baumgartner; Nuria Teigell Beneitez; Jeroen Missine; Sanja Radosavljevic; Dominik Wacht; Gunther Roelkens; Bernhard Lendl

doi:10.1364/ES.2021.ETh2A.4

OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES)
OSA Technical Digest (Optica Publishing Group, 2021),
paper ETh2A.4
•https://doi.org/10.1364/ES.2021.ETh2A.4

Porous Silica Enrichment Films on Integrated Waveguides for Broadband Mid-IR Spectroscopic Trace Analysis

Bettina Baumgartner, Nuria Teigell Beneitez, Jeroen Missine, Sanja Radosavljevic, Dominik Wacht, Gunther Roelkens, and Bernhard Lendl

Optics and Photonics for Sensing the Environment 2021

Washington, DC United States
19–23 July 2021
ISBN: 978-1-943580-90-3

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Integrated Frequency Combs and Sensors (ETh2A)

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B. Baumgartner, N. T. Beneitez, J. Missine, S. Radosavljevic, D. Wacht, G. Roelkens, and B. Lendl, "Porous Silica Enrichment Films on Integrated Waveguides for Broadband Mid-IR Spectroscopic Trace Analysis," in OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), S. Buckley, F. Vanier, S. Shi, K. Walker, I. Coddington, S. Paine, K. Lok Chan, W. Moses, S. Qian, P. Pellegrino, F. Vollmer, G. , J. Jágerská, R. Menzies, L. Emmenegger, and J. Westberg, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper ETh2A.4.

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Abstract

Germanium-on-Silicon waveguide chips coated with functionalized mesoporous silica were used for evanescent wave sensing of organic contaminants in gas and aqueous phase. Low ppm level LODs and fast response times pave the way for in-line monitoring.

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