Laser taking perovskite quantum dot microcrystalline glass as gain medium

A glass-ceramic and gain medium technology, applied in the field of lasers, can solve the problems of poor wavelength tunability, poor reliability and mechanical stability of all-solid-state lasers, and high cost of electrically pumped lasers, and is suitable for mass production and performance. Excellent, environmentally stable and mechanically stable results

Inactive Publication Date: 2019-11-19
DALIAN MARITIME UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] According to the above, problems such as high cost, poor luminous wavelength tunability, low photoelectric conversion efficiency, and unsatisfactory beam quality of the existing technology are proposed in the electric pump laser, and all-solid-state lasers have poor wavelength tunability, low photoelectric conversion efficiency, and poor wavelength stability. problems, as well as technical problems such as poor environmental stability, reliability and mechanical stability of lasers based on nanocrystalline quantum dots and nanowires or thin films mixed with other materials as laser gain media, and large optical transmission losses , and provide a laser with perovskite quantum dot glass-ceramics as the gain medium

Method used

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  • Laser taking perovskite quantum dot microcrystalline glass as gain medium
  • Laser taking perovskite quantum dot microcrystalline glass as gain medium
  • Laser taking perovskite quantum dot microcrystalline glass as gain medium

Examples

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Effect test

Embodiment 1

[0043] Such as figure 1 Shown is a schematic diagram of a laser with a perovskite quantum dot glass ceramic whose resonant cavity structure is Fabry-Perot (FP) as the gain medium in the present invention. Such as figure 1 As shown, in this embodiment, the laser with perovskite quantum dot glass ceramics as the gain medium includes:

[0044] The pump source 1 is used to excite the laser gain medium 2 so that the laser gain medium 2 emits photons;

[0045] The laser gain medium 2 is used to receive the radiation of the pump source 1 and emit photons;

[0046] The resonant cavity 3 is used to amplify the photons emitted by the laser gain medium 2 to output continuous laser or pulsed laser.

[0047] The perovskite quantum dot glass ceramic material of the laser gain medium 2 is CsPbX 3 (X=Cl,Br,I), or CsPb(Cl x Br 1-x ) 3 (x=0-1), or CsPb(Br x I 1-x ) 3 (x=0-1), or CsPb 2 Br 5 The Pb ions in the perovskite quantum dot glass-ceramic material can be replaced in whole or in part with tin ion...

Embodiment 2

[0054] figure 2 It is a schematic diagram of a laser with a perovskite quantum dot glass ceramic whose resonant cavity structure is a distributed Bragg reflector (DBR) as a gain medium in the present invention. Such as figure 2 As shown, in this embodiment, the laser with perovskite quantum dot glass ceramics as the gain medium includes:

[0055] The pump source 1 is used to excite the laser gain medium 2 so that the laser gain medium 2 emits photons;

[0056] The laser gain medium 2 is used to receive the radiation of the pump source 1 and emit photons;

[0057] The resonant cavity 3 is used to amplify the photons emitted by the laser gain medium 2 to output continuous laser or pulsed laser.

[0058] The difference from Embodiment 1 is that in the laser with the perovskite quantum dot glass ceramics of Embodiment 2 as the gain medium, the resonator 3 is a distributed Bragg reflector (DBR) structure resonator in a periodic structure resonator. . The laser gain medium 2 is formed b...

Embodiment 3

[0061] image 3 It is a schematic diagram of the laser with the perovskite quantum dot glass ceramics as the gain medium with the distributed feedback (DFB) cavity structure in the present invention. Such as image 3 As shown, in this embodiment, the laser with perovskite quantum dot glass ceramics as the gain medium includes:

[0062] The pump source 1 is used to excite the laser gain medium 2 so that the laser gain medium 2 emits photons;

[0063] The laser gain medium 2 is used to receive the radiation of the pump source 1 and emit photons;

[0064] The resonant cavity 3 is used to amplify the photons emitted by the laser gain medium 2 to output continuous laser or pulsed laser.

[0065] The difference from Embodiment 1 is that in the laser with the perovskite quantum dot glass ceramics of Embodiment 3 as the gain medium, the resonator 3 is a distributed feedback (DFB) structure resonator in a periodic structure resonator. Make the laser emit laser light in both directions.

[0066...

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Abstract

The invention provides a laser taking perovskite quantum dot microcrystalline glass as a gain medium. The laser comprises a pump source, a laser gain medium and a resonant cavity. The pump source is apump light source which is shorter than a quantum dot absorption cut-off wavelength and is used to excite the laser gain medium. The laser gain medium is the perovskite quantum dot microcrystalline glass and is used to receive radiation from the pump source and emit photons. The resonant cavity is a periodic structure resonant cavity and is used for amplifying the photon emitted by the laser gainmedium to output continuous lasers or a pulsed laser. A perovskite quantum dot microcrystalline glass material of the laser gain medium is CsPbX3 (X=Cl, Br, I), or CsPb (ClxBr1-x)3, or CsPb (BrxI1-X)3, or CsPb2Br5. Pb ions in the perovskite quantum dot microcrystalline glass material can be completely or partially replaced with tin ions, or bismuth ions, or manganese ions. A luminous wavelength of the perovskite quantum dot microcrystalline glass can be adjusted in a range of 400-800 nm, environmental and mechanical stability is good, and optical transmission losses are low.

Description

Technical field [0001] The present invention relates to the field of laser technology, in particular, to a laser with perovskite quantum dot glass-ceramics as a gain medium. Background technique [0002] Visible light solid-state lasers have a wide range of applications in laser communications, fluorescence excitation, lidar, photoelectric detection, medical instruments, bioengineering, material analysis, laser marking, holography, Raman spectroscopy, laser lighting and other fields. Visible light solid-state lasers include mainly semiconductor electrically pumped lasers and all-solid-state optically pumped nonlinear effect (frequency doubled) lasers. [0003] Semiconductor electrically pumped lasers have complex processes and high costs. Because the wavelength is limited by the band gap of the semiconductor material, the lasing wavelength is narrow or discontinuously adjustable, and the beam quality is not good (polarization leads to poor cross-mode characteristics) . Although s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/091H01S3/16H01S3/17H01S3/06H01S3/063H01S3/067H01S3/08H01S3/0933H01S3/115H01S3/117H01S3/11
CPCH01S3/0602H01S3/063H01S3/06716H01S3/08H01S3/091H01S3/0933H01S3/1115H01S3/115H01S3/117H01S3/16H01S3/17
Inventor 张希珍陈宝玖
Owner DALIAN MARITIME UNIVERSITY
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