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Organic solid laser based on metal nano core-shell structure-metal film plasma composite structure and preparation method

A technology of metal nanoparticles and core-shell structure, which is applied in the field of lasers and achieves the effects of simple preparation method, enhanced lasing performance and simple structure

Active Publication Date: 2020-06-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this has improved the lasing performance of organic solid-state lasers based on metal thin films to varying degrees, the quenching of dye molecules by metal electrodes is still unavoidable, which has become a key issue in the field of organic solid-state lasers. One of the urgently needed obstacles in electrically pumped organic solid-state lasers

Method used

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  • Organic solid laser based on metal nano core-shell structure-metal film plasma composite structure and preparation method
  • Organic solid laser based on metal nano core-shell structure-metal film plasma composite structure and preparation method
  • Organic solid laser based on metal nano core-shell structure-metal film plasma composite structure and preparation method

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Embodiment 1

[0029] This embodiment is an organic solid-state laser based on a metal nano-core-shell structure-metal thin film plasma composite structure, specifically as figure 1 As shown, it includes a substrate 1, a metal thin film layer 2, a core-shell structure layer 3, and a gain medium layer 4 that are stacked in sequence; the metal thin film layer 2 is a silver thin film layer capable of producing non-localized surface plasmon effect SPP, with a thickness of 50nm; the shell material in the core-shell structure layer 3 is the isolation dielectric material SiO 2 , the thickness is 10nm, the central core material is silver nanospheres with a diameter of 40nm, and the core-shell structure nanoparticles are densely deposited on the metal film layer 2; the material of the gain medium layer 4 is made of polystyrene and blue laser dye BMT-TPD Composed according to the mass ratio of 4:1, the thickness is 300nm.

[0030] The specific device structure is expressed as follows: glass / Ag film(5...

Embodiment 2

[0036] This embodiment is an organic solid-state laser based on a metal nano-core-shell structure-metal thin film plasma composite structure, specifically as figure 2 As shown, it includes a substrate 1, a metal thin film layer 2, a core-shell structure layer 3, and a gain medium layer 4 that are stacked in sequence; the metal thin film layer 2 is a silver thin film layer capable of producing non-localized surface plasmon effect SPP, with a thickness of 50nm; the shell material in the core-shell structure layer 3 is the isolation dielectric material SiO2 , the thickness is 10nm, the central core material is silver nanospheres with a diameter of 40nm, and the core-shell structure nanoparticles are densely deposited on the metal thin film layer 2; the second metal nanoparticles 5 are randomly distributed in the material of the gain medium layer 4, and the material Composed of polystyrene and blue laser dye BMT-TPD according to the mass ratio of 4:1, these second metal nanopartic...

Embodiment 3

[0043] This embodiment is an organic solid-state laser based on a metal nano-core-shell structure-metal thin film plasma composite structure, specifically as figure 2 As shown, the specific structure of the device is the same as that of Embodiment 2, the only difference is that the doping concentration of the second metal nanoparticles 5 in the gain medium layer 4 is different, which is 8.65×10 in this embodiment. -3 g / cm 3 .

[0044] The specific preparation method of this organic solid-state laser is also the same as the method provided in Example 2, and the only difference is that when preparing the gain medium layer 4, the doping concentration of the second metal nanoparticles 5 in the gain medium layer 4 is controlled to correspond to Numerical values ​​are not described in detail here.

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Abstract

The invention discloses an organic solid laser based on a metal nano core-shell structure-metal film plasma composite structure. The organic solid laser comprises a substrate, a metal film layer, a core-shell structure layer and a gain dielectric layer which are sequentially stacked. The metal film layer is a metal film capable of generating a non-local surface plasma effect SPP. A shell layer material in the core-shell structure layer is an isolation medium material, and a central core material is first metal nanoparticles capable of realizing a localized surface plasma effect LSPR. The shelllayer of the core-shell structure is ingeniously used as the isolation layer, the distance between the LSPR and the SPP is regulated and controlled by changing the thickness of the shell layer, coupling between the LSPR and the SPP is achieved, then a strong local electric field is generated, the structure is simpler, and the preparation method is simpler and more convenient.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an organic solid-state laser based on a metal nano-core-shell structure-metal thin film plasma composite structure and a preparation method. Background technique [0002] With the development and application of organic optoelectronic devices, the research on the lasing phenomenon of organic functional materials and organic solid-state laser devices has become a hot spot in international research in recent years. Compared with inorganic materials, lasers based on organic semiconductor materials have many advantages, such as simple preparation process, low cost, abundant materials, easy tuning of emission wavelength, etc., and have huge market prospects in military, medical, communication, scientific research and other fields , so it has been widely concerned by researchers at home and abroad. [0003] At present, great progress has been made in the optical pumping of organic solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/16B82Y30/00
CPCB82Y30/00H01S3/06H01S3/168
Inventor 宁舒雅张一凡张那明代康吴元
Owner SHAANXI UNIV OF SCI & TECH
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