Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5003655
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Funding
- Advanced Research Foundation [7/004/2013-2018]
- Russian Foundation for Basic Research [17-02-01093]
- NSF [DMR-1312707]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1312707] Funding Source: National Science Foundation
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We demonstrate intracavity plasmonic laser spectroscopy using a plasmonic laser created from a periodically perforated silver film with a liquid gain medium. An active zone of the laser is formed by a highly elongated spot of pumping. This results in a significantly more efficient diffusive mixing of dye molecules, which suppresses the effect of their bleaching, and in the ability to reduce the volume of the gain medium to as little as 400 nl. We use this design for a stable plasmonic laser in multiple measurements and demonstrate that it is highly effective as a spaser spectroscopy sensor for intracavity detection of an absorptive dye at 0.07 ppm. This work provides an opportunity to develop applications of intracavity plasmonic laser spectroscopy in biological label detection and other fields. (C) 2017 Author(s).
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