Journal
ACS PHOTONICS
Volume 5, Issue 2, Pages 406-412Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.7b00846
Keywords
plasmon-assisted nanolaser; multiline operation; nonlinear frequency conversion; Nd3+ solid-state laser; Ag nanoparticles chain; second harmonic generation
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Funding
- Spanish Ministry of Economy and Competitiveness (MINECO) [MAT2013-43301-R, MAT2015-66128-R, MAT2016-76106-R]
- Comunidad de Madrid [S2013/MIT-2740]
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The demonstration of plasmon-assisted lasing by associating optical gain media with plasmonic nanostructures has led to a new generation of nanophotonic devices with unprecedented performances. However, despite the variety of designs demonstrated so far, the operation of these systems is in most cases limited to a single output wavelength, and some reports on multiline emission refer to mixing single nanolasers with the subsequent limitation in compactness. Here, we show multiline operation from a single plasmon-assisted nonlinear solid-state laser on which a linear chain of Ag nanoparticles is deposited. The system provides lasing at 1.08 mu m, which is self converted to the visible range through different parametric frequency-mixing processes generated at metal-dielectric interfaces. Near infrared and simultaneously green and tunable blue radiation with a subwavelength confinement in the direction perpendicular to the nanoparticle chain, are obtained at room temperature in CW regime. The results demonstrate the possibility of multifunctional operation from a single plasmon-assisted laser and offer new avenues for the development of highly integrable sources of coherent radiation.
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