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Biophotonic sensors with integrated Si$_{3}$N$_{4}$-organic hybrid (SiNOH) lasers for point-of-care diagnostics

Kohler, Daria; Schindler, Gregor; Hahn, Lothar; Milvich, Johannes; Hofmann, Andreas; Länge, Kerstin; Freude, Wolfgang; Koos, Christian

Abstract:
Early and efficient disease diagnosis with low-cost point-of-care devices is gaining importance for personalized medicine and public health protection. Within this context, waveguide-(WG)-based optical biosensors on the silicon-nitride (Si$_{3}$N$_{4}$) platform represent a particularly promising option, offering highly sensitive detection of indicative biomarkers in multiplexed sensor arrays operated by light in the visible-wavelength range. However, while passive Si3N4-based photonic circuits lend themselves to highly scalable mass production, the integration of low-cost light sources remains a challenge. In this paper, we demonstrate optical biosensors that combine Si3N4 sensor circuits with hybrid on-chip organic lasers. These Si3N4-organic hybrid (SiNOH) lasers rely on a dye-doped cladding material that are deposited on top of a passive WG and that are optically pumped by an external light source. Fabrication of the devices is simple: The underlying Si3N4 WGs are structured in a single lithography step, and the organic gain medium is subsequently applied by dispensing, spin-coating, or ink-jet printing processes. A highly parallel read-out of the optical sensor signals is accomplished with a simple camera. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000131376
Veröffentlicht am 16.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photonik und Quantenelektronik (IPQ)
Institut für Mikrostrukturtechnik (IMT)
Institut für Automation und angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2095-5545, 2047-7538
KITopen-ID: 1000131376
Erschienen in Light: Science and Applications
Verlag Springer Nature [academic journals on nature.com]
Band 10
Heft 1
Seiten 64
Schlagwörter Biophotonics; Integrated optics; Lasers, LEDs and light sources; Optical sensors; Silicon photonics
Nachgewiesen in Web of Science
Scopus
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