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Zinc oxide nanorod based random laser and laser gain medium manufacturing method

A technology of zinc oxide nanorods and random lasers, applied in the field of random lasers, can solve problems such as cumbersome processes, achieve low threshold, non-toxic preparation methods, and environmentally friendly effects

Inactive Publication Date: 2016-11-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of zinc oxide nanorods by this method needs to be spin-coated with a layer of zinc oxide nanoparticles as seed crystals in advance, and the process is quite cumbersome; at the same time, it also needs to use toxic chemical reagents zinc nitrate and hexamethylenetetramine

Method used

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  • Zinc oxide nanorod based random laser and laser gain medium manufacturing method
  • Zinc oxide nanorod based random laser and laser gain medium manufacturing method
  • Zinc oxide nanorod based random laser and laser gain medium manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The fabrication method of the random laser gain medium based on ZnO nanorods described in this example.

[0037] According to the steps of the method for making a random laser gain medium based on zinc oxide nanorods as described above, the specific operation process is as follows image 3 shown, including the following steps:

[0038] (1) Measure 8.33ml of concentrated hydrochloric acid in a volumetric flask, add deionized water, and prepare a 1mol / L dilute hydrochloric acid solution for use;

[0039] (2) The zinc metal flakes 6 with a thickness of 1mm are cut and grown into 25mm, and the rectangular flakes with a width of 15mm; the rectangular zinc metal flakes 6 are placed in dehydrated alcohol, ultrasonically cleaned for 30min, and then the zinc metal flakes are cleaned with nitrogen gas. Blow dry with absolute ethanol on the surface;

[0040] (3) Place the rectangular zinc metal flake 6 after cleaning with absolute ethanol described in step (2) in acetone, ultras...

Embodiment 2

[0046] The method for making the random laser gain medium based on zinc oxide nanorods.

[0047] According to the steps of the method for making a random laser gain medium based on zinc oxide nanorods as described above, the specific operation process is as follows image 3 shown, including the following steps:

[0048] (1) Measure 8.33ml of concentrated hydrochloric acid in a volumetric flask, add deionized water, and prepare a 1mol / L dilute hydrochloric acid solution for use;

[0049] (2) The zinc metal flakes 6 with a thickness of 1mm are cut and grown into 25mm, and the rectangular flakes with a width of 15mm; the rectangular zinc metal flakes 6 are placed in dehydrated alcohol, ultrasonically cleaned for 30min, and then the zinc metal flakes are cleaned with nitrogen gas. Blow dry with absolute ethanol on the surface;

[0050] (3) Place the rectangular zinc metal flake 6 after cleaning with absolute ethanol described in step (2) in acetone, ultrasonically clean it for 3...

Embodiment 3

[0056] In this embodiment, the random laser gain medium 4 based on zinc oxide nanorods is used to build a random laser.

[0057] The pump laser 1 described in the present embodiment selects Nd:YAG laser, the pump wavelength is 532nm, the frequency is 10Hz, and the pulse width is 10ns; the reflector 2 selects a 532nm reflector; the cylindrical lens 3 selects a focal length of 10mm The cylindrical lens; the optical fiber spectrometer probe 5 is an Ocean Optics USB4000 spectrometer with an optical resolution of 1.5nm.

[0058] according to figure 1 The schematic diagram of the optical path of the random laser based on zinc oxide nanorods is shown, and each component is built. Adjust the orientation of the reflector 2 to be 45° to the horizontal direction; place the cylindrical lens 3 horizontally at a distance of 30 mm from the reflector; place the fabricated random laser gain medium 4 based on zinc oxide nanorods horizontally at the distance from the cylindrical lens 3 10 mm; ...

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Abstract

The invention belongs to the field of random lasers and relates to a zinc oxide nanorod based random laser and a laser gain medium manufacturing method. The random laser comprises a pump laser, a reflecting mirror, a cylindrical lens and a zinc oxide nanorod based random laser gain medium, and the random laser gain medium comprises a zinc metal sheet, a micron zinc metal structure, zinc oxide nanorods, a polymethyl methacrylate film and rhodamine 6G. According to the method, the zinc oxide nanorods directly grow on the surface of the zinc metal sheet by means of hydrothermal oxidation to obtain the random laser gain medium on the basis of the zinc oxide nanorods. The zinc oxide nanorod manufacturing method is simple, low in cost and nontoxic; by adoption of the zinc oxide nanorods on the surface of the zinc metal sheet as scattering particles, random laser output is realized. The random laser is simple in structure and has advantages of low cost and environment friendliness.

Description

technical field [0001] The invention relates to a random laser, in particular to a zinc oxide nanorod-based random laser and a method for making a laser gain medium thereof, belonging to the technical field of random lasers. Background technique [0002] In recent years, random lasers have become a popular research direction in the fields of optics and condensed matter physics. Random lasers have broad application prospects in laser display, disease diagnosis, information processing, coded marking, integrated optics and many other aspects. [0003] Traditional lasers mainly include gain medium, resonant cavity and pumping system. A resonant cavity typically consists of two mirrors that generate coherent feedback, whereby light bounces back and forth between the two mirrors and is amplified until a beam is formed. Random lasers, however, do not need mirrors to work. For traditional lasers, scattering should be avoided as much as possible during work, while random lasers ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16C23C8/42
CPCC23C8/42H01S3/163
Inventor 冯国英张华周寿桓
Owner SICHUAN UNIV
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