期刊
BIOSENSORS & BIOELECTRONICS
卷 197, 期 -, 页码 -出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2021.113816
关键词
Organic solid-state laser; Distributed feedback; Optical waveguide biosensor; Mach-Zehnder interferometer; Silicon nitride; Point-of-care diagnostics
类别
资金
- NO Forschungs-und Bildungsges.m.b.H (NFB) through the Life Science grant [LS13-023]
- Austrian Ministry for Transport, Innovation and Technology (BMVIT)
- Austrian Research Promotion Agency (FFG) through the program Production of the Future under the PASSION grant [850-649]
- Austrian Research Promotion Agency (FFG) through Austrian NANO Initiative under the PLATON SiNsor grant [834-931]
This study combines a dye-doped organic solid-state distributed feedback laser with a highly sensitive optical waveguide Mach-Zehnder interferometer on a silicon nitride photonic platform for use in photonic lab-on-a-chip biosensors. The organic-hybrid laser allows for optical pumping with a laser diode in an alignment tolerant manner, facilitating applications in point-of-care diagnostics. The sensitivity to bulk refractive index changes and the concentration dependent binding of streptavidin on a polyethyleneimine-biotin functionalized surface demonstrate the practicality of this cost-efficient coherent light source for optical waveguide biosensors.
Single-mode organic solid-state lasers with direct emission into an optical waveguide are attractive candidates for cost-efficient coherent light sources employed in photonic lab-on-a-chip biosensors. Here, we present a combination of a dye-doped organic solid-state distributed feedback laser with a highly sensitive optical waveguide Mach-Zehnder interferometer on a silicon nitride photonic platform. This organic-hybrid laser allows for optical pumping with a laser diode in an alignment tolerant manner, which facilitates applications in point-ofcare diagnostics. The sensitivity to bulk refractive index changes and the concentration dependent binding of streptavidin on a polyethyleneimine-biotin functionalized surface was studied to demonstrate the practicability of this cost-efficient coherent light source for optical waveguide biosensors.
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