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Chrome iron ion double-doped complex selenium zinc sulfide laser material and preparation method thereof

A technology of laser material and zinc selenium sulfide, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of complex pump source system, and achieve the effect of simplifying system structure, narrow and ultra-short pulse, and realizing simplicity

Active Publication Date: 2013-09-04
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no suitable 2.7μm LD pump direct pump source, and the pump source system obtained by nonlinear optics is relatively complicated

Method used

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  • Chrome iron ion double-doped complex selenium zinc sulfide laser material and preparation method thereof
  • Chrome iron ion double-doped complex selenium zinc sulfide laser material and preparation method thereof

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Effect test

Embodiment 1

[0027] According to the molecular formula, the raw material ratio is prepared, and Cr, Fe: ZnSe ceramics are prepared by the hot pressing method, and x=0 is taken as the raw material ratio. First, the high-purity ZnSe powder is weighed according to the above-mentioned ratio, and after the mechanical mixing is uniform, it is put into a hot-press furnace for vacuum hot-press sintering, sintered at 900 degrees Celsius and 400 MPa for 2-5 hours, and then slowly reduced to room temperature. Take out the ZnSe ceramic, polish the surface of the prepared ZnSe ceramic, plate a mixed film of metal Cr and Fe, and perform high-temperature diffusion annealing at 850 degrees Celsius for 2 weeks under vacuum conditions to obtain high-quality Cr, Fe: ZnSe ceramics. Using the prepared Cr, Fe: ZnSe ceramics, processing the coating, and designing the laser cavity, using a 1.7 micron LD pump, an ultra-fast laser output of 70 fs can be obtained.

Embodiment 2

[0029] Preparation of Cr, Fe: ZnS by Chemical Vapor Deposition χ Se 1-χ For ceramics, take x=0.7% in the ratio of raw materials. First, the high-purity ZnS and ZnSe targets are made according to the above ratio, and at the same time, 0.1at% of Fe ions and 0.2at% of Cr ions are mixed into the target, and Cr,Fe:ZnS is prepared by CVD method 0.7 Se 0.3 For polycrystalline ceramics, the prepared Cr, Fe: ZnSSe ceramics are subjected to hot isostatic pressing, and then subjected to high-temperature diffusion annealing at 1000 degrees Celsius under vacuum for 1 week to obtain high-quality Cr, Fe: ZnSSe ceramics. The prepared Cr, Fe: ZnSSe ceramics are processed according to Brewster's angle, and the laser cavity is designed. 1.7 micron LD pump is used to obtain 3-5 micron mid-infrared laser output. figure 2 Is Cr 2+ And Fe 2+ Absorption spectrum in ZnSSe composite laser material doped with ZnS, ZnSe, Cr and Fe ions.

Embodiment 3

[0031] The Cr, Fe: ZnS ceramics are prepared by chemical vapor deposition method, and x=1 in the raw material ratio. The experiment was carried out in a horizontal quartz tube reactor. The reaction furnace is divided into a zinc evaporation zone and a deposition zone, which are heated by three-temperature zone resistance heating. The raw material used is H 2 S gas and analytical pure Zn, the substrate is graphite. H 2 The flow of S gas is controlled by a rotameter, and the flow of Zn is controlled by adjusting the evaporation temperature of Zn. The prepared ZnS material is subjected to hot isostatic pressing, and the surface is polished and then coated with Fe and Cr metal films, and then the sample is subjected to high temperature diffusion annealing at 950 degrees Celsius under vacuum conditions for 2 weeks to obtain high-quality Cr, Fe:ZnS ceramics.

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Abstract

The invention discloses a chrome iron ion double-doped complex selenium zinc sulfide laser material and a preparation method thereof. The molecular formula of the chrome iron ion double-doped complex selenium zinc sulfide laser material is Cr, Fe:ZnSxSe1-x, wherein x is not less than 0 and not more than 1. For the Cr and Fe transition metal ion energy band, the bandwidth is in a middle infrared wavelength range, the absorption and emission bandwidths are wide, the absorption and emission section areas are large, and ultrashort and ultrafast laser output with high peak power can be obtained. The Cr, Fe: ZnSSe laser material with excellent laser optical property can be subjected to LD (Laser Diode) direct pumping to manufacture an ultrafast laser device with low threshold, thus, the laser device is promoted to be more succinct and more miniature.

Description

Technical field [0001] The invention relates to a laser material, in particular to a chromium-iron ion double-doped composite selenium zinc sulfide laser material and a preparation method thereof. The chromium-iron ion double-doped composite selenium zinc sulfide laser material has a molecular formula of Cr, Fe:ZnS χ Se 1-χ , Where the value range of x is: 0≤x≤1. Background technique [0002] The mid-infrared band (2~5μm) is located in the "molecular fingerprint area" and the "atmospheric window area" at the same time, making the laser in this band suitable for basic research, chemical remote sensing, infrared countermeasures (IRCM), optical radar, infrared target simulation, and confidentiality. There are important applications in space communications and satellite communications (long wavelengths are conducive to penetrating clouds and fog), environment and medical treatment. At present, the main ways to realize 2-5μm mid- and far-infrared solid-state lasers are: Difference Fr...

Claims

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Application Information

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IPC IPC(8): C09K11/88B22F3/10B22F3/24
Inventor 姜本学张龙姜雄伟毛小建范金太
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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