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3D-nanoprinted antiresonant hollow-core microgap waveguide: an on-chip platform for integrated photonic devices and sensors.

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Title: 3D-nanoprinted antiresonant hollow-core microgap waveguide: an on-chip platform for integrated photonic devices and sensors.
Authors: Bürger, J
Schalles, V
Kim, J
Jang, B
Zeisberger, M
Gargiulo, J
De S Menezes, L
Schmidt, MA
Maier, SA
Item Type: Journal Article
Abstract: Due to their unique capabilities, hollow-core waveguides are playing an increasingly important role, especially in meeting the growing demand for integrated and low-cost photonic devices and sensors. Here, we present the antiresonant hollow-core microgap waveguide as a platform for the on-chip investigation of light-gas interaction over centimeter-long distances. The design consists of hollow-core segments separated by gaps that allow external access to the core region, while samples with lengths up to 5 cm were realized on silicon chips through 3D-nanoprinting using two-photon absorption based direct laser writing. The agreement of mathematical models, numerical simulations and experiments illustrates the importance of the antiresonance effect in that context. Our study shows the modal loss, the effect of gap size and the spectral tuning potential, with highlights including extremely broadband transmission windows (>200 nm), very high contrast resonance (>60 dB), exceptionally high structural openness factor (18%) and spectral control by nanoprinting (control over dimensions with step sizes (i.e., increments) of 60 nm). The application potential was demonstrated in the context of laser scanning absorption spectroscopy of ammonia, showing diffusion speeds comparable to bulk diffusion and a low detection limit. Due to these unique properties, application of this platform can be anticipated in a variety of spectroscopy-related fields, including bioanalytics, environmental sciences, and life sciences.
Issue Date: 21-Sep-2022
Date of Acceptance: 1-Sep-2022
URI: http://hdl.handle.net/10044/1/99976
DOI: 10.1021/acsphotonics.2c00725
ISSN: 2330-4022
Publisher: American Chemical Society
Start Page: 3012
End Page: 3024
Journal / Book Title: ACS Photonics
Volume: 9
Issue: 9
Copyright Statement: © 2022 The Authors. Published by American Chemical Society. This work is published under a CC BY-NC-ND international licence.
Keywords: 0205 Optical Physics
0206 Quantum Physics
0906 Electrical and Electronic Engineering
Publication Status: Published
Conference Place: United States
Online Publication Date: 2022-09-02
Appears in Collections:Physics
Experimental Solid State
Faculty of Natural Sciences



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