Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of erbium ion-doped calcium fluoride laser transparent ceramic material

A technology of laser transparency and doped calcium fluoride, which is applied in the preparation of rare earth ion-doped calcium fluoride laser transparent ceramics and Er3+:CaF2 laser transparent ceramics, which can solve the problem of low transmittance and high experimental conditions. , complex process and other issues, to achieve high optical performance, low sintering temperature, and simple operation

Inactive Publication Date: 2011-07-20
WUHAN UNIV OF TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the current research progress, the preparation or process of erbium ion-doped calcium fluoride laser ceramics is complicated, or the experimental conditions are relatively high, or the transmittance is not high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of erbium ion-doped calcium fluoride laser transparent ceramic material
  • Preparation method of erbium ion-doped calcium fluoride laser transparent ceramic material
  • Preparation method of erbium ion-doped calcium fluoride laser transparent ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation process is as figure 1 shown. According to the molar ratio of calcium ions and erbium ions in the sintered powder, n(Ca 2+ ):n(Er 3+ )=99.0:1.0 The ratio configuration concentration is 2M Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution, and the KF solution with the same volume concentration of 4.02M; using the direct chemical co-precipitation method, the Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution is slowly poured into the KF solution, magnetically stirred evenly, and the stirring rate is 500rpm to obtain a suspension of erbium ion-doped calcium fluoride nanopowder, and then after standing for 40 hours, alcohol cleaning, centrifugal separation, and vacuum drying at 80°C, etc. Steps to prepare 1mol% Er with an average grain size of 20nm 3+ :CaF 2 Nano powder. Put the powder into a graphite mold and sinter in a spark plasma sintering device with a heating rate of 10°C / min, a temperature of 600°C for 20 minutes, a pressure of 30MPa, and a vac...

Embodiment 2

[0036] The preparation process is as figure 1 shown. According to the molar ratio of calcium ions and erbium ions in the sintered powder, n(Ca 2+ ):n(Er 3+ )=95.0:5.0 ratio configuration concentration of 2M Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution, and the KF solution with the same volume concentration of 4.1M; using the direct chemical co-precipitation method, the Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution is slowly poured into the KF solution, magnetically stirred evenly, and the stirring rate is 500rpm to obtain a suspension of erbium ion-doped calcium fluoride nanopowder, and then after standing for 40 hours, alcohol cleaning, centrifugal separation, and vacuum drying at 80°C, etc. Steps to prepare 5mol% Er with an average grain size of 18nm 3+ :CaF 2 Nanopowders, see figure 2 , is 5mol% Er 3+ :CaF 2 XRD patterns of nanopowders. Put the powder into a graphite mold and sinter in a spark plasma sintering device with a heating rate of 10°C / min, a te...

Embodiment 3

[0039] The preparation process is as figure 1 shown. According to the molar ratio of calcium ions and erbium ions in the sintered powder, n(Ca 2+ ):n(Er 3+ )=93.0:7.0 The ratio configuration concentration is 2M Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution, and the KF solution with the same volume concentration of 4.14M; using the direct chemical co-precipitation method, the Ca(NO 3 ) 2 and Er(NO 3 ) 3 The mixed solution is slowly poured into the KF solution, magnetically stirred evenly, and the stirring rate is 500rpm to obtain a suspension of erbium ion-doped calcium fluoride nanopowder, and then after standing for 40 hours, alcohol cleaning, centrifugal separation, and vacuum drying at 80°C, etc. step, prepared 7mol% Er with an average grain size of 17nm 3+ :CaF 2 Nano powder. Put the powder into a graphite mold and sinter in a spark plasma sintering device with a heating rate of 10°C / min, a temperature of 600°C for 20 minutes, a pressure of 30MPa, and a vacuu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of erbium ion-doped calcium fluoride laser transparent ceramic, which comprises synthesis of raw material powder, sintering and post treatment of laser transparent ceramic and other steps, wherein sintering powder is nano powder obtained by a direct chemical reaction coprecipitation method, and the grain size of the nano powder is 15-60nm; the mol content of rare earth ions Er<3+> is 1-20%; by using the discharge plasma sintering technology, the density of the prepared laser ceramic is more than 99.6%, and the grain size of the laser ceramic is 1-10 mu m; and the ceramic has a maximum transmittance of about 87% in the visible light and near infrared bands, has strong absorption peaks at 377nm, 519nm and 652nm, has wide absorption bands at 804nm, 974nm and 1526nm, and can be used as infrared and upconversion laser working gain media. The invention has the advantages of simple nano powder preparation process, low ceramic sintering temperature, short ceramic sintering time and the like.

Description

technical field [0001] The present invention relates to the preparation method of rare earth ion doped calcium fluoride laser transparent ceramics, relate to a kind of Er more precisely 3+ :CaF 2 The invention discloses a method for preparing laser transparent ceramics, belonging to the technical field of laser transparent ceramic preparation. Background technique [0002] Calcium Fluoride (CaF 2 ) crystal is an excellent laser medium matrix material. Its lattice lattice symmetry diversity allows high-concentration doping of rare earth ions, large band gap (-12ev), wide light transmission range (125nm~10μm), and small refractive index. (~1.434, Vis~NIR), low phonon energy (~390cm -1 ), as an upconversion laser material is very beneficial to improve its conversion efficiency. [0003] The most studied CaF 2 The laser material is mainly CaF 2 Single crystal, with the rapid development of pumping technology, Er +3 、Tm +3 , Yb +3 CaF doped with trivalent rare earth ion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/553C04B35/622
Inventor 梅炳初智广林宋京红周卫兵李威威
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com