Study of plasmonic nanolaser based on the deep subwavelength scale

Hong, Huang Qiu; Qing, Zhou; Jiao, Jiao; Liang, Guozheng; Huang, Xiaoping

doi:10.7498/aps.62.135201

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…[7] In order to keep a good balance between the propagation loss and the mode confinement, a variety of hybrid plasmonic waveguides for nanolaser applications have been put forward in recent years. [8][9][10][11] Oulton proposed a typical hybrid plasmonic waveguide structure composed of a highindex dielectric nanowire above a metal layer which exhibits low loss and long propagation distance with subwavelength confinement. [12] Then a similar hybrid waveguide consisting of a CdS nanowire on top of a silver substrate separated by an ultra-thin MgF 2 buffer layer was investigated.…”

Section: Introductionmentioning

confidence: 99%

A low-threshold nanolaser based on hybrid plasmonic waveguides at the deep subwavelength scale

Piao²,

Zhao³

et al. 2015

Chinese Phys. B

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A novel nanolaser structure based on a hybrid plasmonic waveguide is proposed and investigated. The coupling between the metal nanowire and the high-index semiconductor nanowire with optical gain leads to a strong field enhancement in the air gap region and low propagation loss, which enables the realization of lasing at the deep subwavelength scale. By optimizing the geometric parameters of the structure, a minimal lasing threshold is achieved while maintaining the capacity of ultra-deep subwavelength mode confinement. Compared with the previous coupled nanowire pair based hybrid plasmonic structure, a lower threshold can be obtained with the same geometric parameters. The proposed nanolaser can be integrated into a miniature chip as a nanoscale light source and has the potential to be widely used in optical communication and optical sensing technology.

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Section: Introductionmentioning

confidence: 99%

A low-threshold nanolaser based on hybrid plasmonic waveguides at the deep subwavelength scale

Piao²,

Zhao³

et al. 2015

Chinese Phys. B

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Optically pumped lasing and electroluminescence in ZnO/GaN nano-heterojunction array devices

et al. 2015

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The preparation of a highly ordered ZnO/GaN nano-heterojunction array is introduced. Combining the merits of nanolaser and plasmonic Fabry-Perot nanolaser, we designed and fabricated an ultraviolet nanolaser with Ag-dielectric hybrid film-coated n-ZnO nanowires (NWs) array on p-GaN substrate. Ultraviolet random lasing behavior from the ZnO/GaN nano-heterojunction array has been demonstrated with both optical and electrical pumping, where the surface plasmon enhancement effect in the lasing process is discussed. The numerical simulation results show the surface plasmon at the Ag/SiO 2 /ZnO interface may be excited and strongly compress the waveguided modes, which were found to optimize the lasing spectrum and increase the light intensity compared to the bare NWs array. With the electric pumping of the device, the electroluminescence parameters are characterized and the underlying mechanism is also discussed.

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The Design and Research of a New Hybrid Surface Plasmonic Waveguide Nanolaser

Liu

et al. 2021

Materials

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Using the hybrid plasmonic waveguide (HPW) principle as a basis, a new planar symmetric Ag-dielectric-SiO2 hybrid waveguide structure is designed and applied to nanolasers. First, the effects on the electric field distribution and the characteristic parameters of the waveguide structure of changes in the material, the nanometer radius, and the dielectric layer thickness were studied in detail using the finite element method with COMSOL Multiphysics software. The effects of two different dielectric materials on the HPW were studied. It was found that the waveguide performance could be improved effectively and the mode propagation loss was reduced when graphene was used as the dielectric, with the minimum effective propagation loss reaching 0.025. Second, the gain threshold and the quality factor of a nanolaser based on the proposed hybrid waveguide structure were analyzed. The results showed that the nanolaser has a lasing threshold of 1.76 μm−1 and a quality factor of 109 when using the graphene dielectric. A low-loss, low-threshold laser was realized, and the mode field was constrained by deep sub-wavelength light confinement. This structure has broad future application prospects in the integrated optics field and provides ideas for the development of subminiature photonic devices and high-density integrated circuits.

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Study of plasmonic nanolaser based on the deep subwavelength scale

Cited by 5 publications

References 18 publications

A low-threshold nanolaser based on hybrid plasmonic waveguides at the deep subwavelength scale

A low-threshold nanolaser based on hybrid plasmonic waveguides at the deep subwavelength scale

Optically pumped lasing and electroluminescence in ZnO/GaN nano-heterojunction array devices

The Design and Research of a New Hybrid Surface Plasmonic Waveguide Nanolaser

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