Random laser and preparation method and application thereof

A random laser and substrate technology, applied in the field of random lasers, can solve problems such as instability and narrow optical frequency

Active Publication Date: 2020-11-24
SHENZHEN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a kind of random laser, the present invention also provides the preparation method of this random laser and its application as light source, by providing a kind of novel random laser, to solve the light problem existing in existing laser Narrow tuning of frequency, inherent instability, etc.

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  • Random laser and preparation method and application thereof
  • Random laser and preparation method and application thereof
  • Random laser and preparation method and application thereof

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preparation example Construction

[0038] In a second aspect, the present invention provides a method for preparing a random laser, comprising the following steps:

[0039] Synthesis of graphdiyne: Provide hexaethynylbenzene as a synthetic monomer, dissolve hexaethynylbenzene in an organic solvent to obtain a hexaethynylbenzene solution, provide a substrate and place it in an organic solvent to obtain a substrate solution, heat the substrate solution and maintain it at 55 ~ 65°C, adding the hexaethynylbenzene solution to the insulated substrate solution at one time and reacting for 1 to 5 days to prepare graphdiyne attached to the substrate;

[0040]Exfoliation of graphdiyne film: transfer the graphdiyne attached to the substrate to ferric chloride solution for wet exfoliation to obtain graphdiyne film;

[0041] Preparation of random laser: use graphdiyne film as gain medium to prepare random laser;

[0042] The base is made of copper.

[0043] Preferably, in the step of synthesizing graphdiyne, the organic s...

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Abstract

The invention provides a random laser, which comprises a gain medium, and is characterized in that the gain medium is a graphite diyne nanosheet. According to the random laser disclosed by the invention, the graphdiyne nanosheet is used as the gain medium; the graphdiyne nanosheet shows excellent light emission performance in a visible light region, photon transition complies with three-energy-level energy structure regulations, and meanwhile, photons with broadband emission spectrum of 450-700nm and wavelength of less than 400nm are shown to be an effective excitation source. The invention also provides a preparation method and application of the random laser.

Description

technical field [0001] The invention relates to the technical field of random lasers, in particular to a random laser, and also relates to a preparation method and application of the random laser. Background technique [0002] The solid-state laser pumped by a semiconductor laser is a laser generating device that uses a laser diode sequence as a pump source and a solid-state laser material as a gain medium. All-solid-state lasers have the advantages of small size, light weight, high efficiency, stable performance, good reliability, long life, and high beam quality, and the market demand is huge. All-solid-state laser technology is currently one of the few high-tech fields in my country that has overall advantages from material source to laser system integration. It has a good foundation for accelerated development in some fields, but in the absence of mirrors , there is a huge unmet demand for coherent laser sources provided by disordered gain media. [0003] Random laser i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01S3/16
Inventor 张晗鲍文莉康建龙张家宜
Owner SHENZHEN UNIV
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