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Novel praseodymium ion-activated gadolinium gallium garnet laser crystal

A technology of gadolinium gallium garnet and laser crystals, which is applied in the field of laser crystal materials, can solve the problems of no research reports, no laser research reports, and less research on laser crystals.

Inactive Publication Date: 2011-07-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. Low thermo-optic effect:
[0021] Obviously, GGG is an excellent laser host crystal, but the focus of current research is mainly on Nd-activated high-power heat-capacity laser crystals. For other active ion-doped Gd 3 Ga 5 o 12 Laser crystals are less studied, especially for Pr 3+ Doped Gd 3 Ga 5 o 12 There are no research reports on the growth and spectral properties of laser crystals at home and abroad, let alone research reports on laser output.

Method used

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  • Novel praseodymium ion-activated gadolinium gallium garnet laser crystal
  • Novel praseodymium ion-activated gadolinium gallium garnet laser crystal
  • Novel praseodymium ion-activated gadolinium gallium garnet laser crystal

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Experimental program
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Effect test

Embodiment 1

[0029] Embodiment one: Pr:Gd 3 Ga 5 o 12 Crystal Growth Preparation

[0030] The instrument used for crystal pulling method growth is DJL-400 intermediate frequency pulling furnace, and the model of intermediate frequency power supply is KGPF25-0.3-2.5. Use Pt / Pt-Rh thermocouple and type 815EPC ohmmeter for temperature control. The crucible used is an iridium crucible of Φ55mm×30mm, and the raw material used is 4N grade Gd 2 o 3 , Ga 2 o 3 、Pr 2 o 3 . Prepare raw materials according to the following chemical reaction formula:

[0031] (3-x)Gd 2 o 3 +5Ga 2 o 3 +xPr 2 o 3 →2Gd (3-x) PR x Ga 5 o 12

[0032] x=0.05at%~5at%; mix the raw materials evenly, press them into flakes, put them into a platinum crucible, put them into a common sintering furnace, slowly raise the temperature to 1080°C at 150°C / h, keep it for 48h, repeat this process, and then Put it into a high-temperature sintering furnace and sinter at a constant temperature of 1350 ° C for 72 hours, an...

Embodiment 2

[0034] Embodiment two: Pr:Gd 3 Ga 5 o 12 Crystal Laser Experiments

[0035] Process high-quality Pr:Gd with a size of φ5mm×(10mm~15mm) 3 Ga 5 o 12 For crystal devices, GaN laser diodes were used as the pump source for laser experiments. The experimental device is attached figure 1 shown. 1 in the figure is rod-like Pr:Gd 3 Ga 5 o 12 Crystal; 2 is a GaN pump source; 3 is a dielectric mirror that fully reflects a specific wavelength in the λ=480-780nm band; 4 is a dielectric mirror that partially transmits a specific wavelength in the λ=480-780nm band; 5 It is LPE-1A laser energy meter.

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Abstract

The invention discloses a novel praseodymium ion-activated gadolinium gallium garnet laser crystal which relates to the field of laser crystal materials. The chemical formula of the crystal material is Pr: Gd3Ga5O12. A raw material Pr: Gd3Ga5O12 is obtained through high-temperature solid phase reaction by using Gd2O3, Ga2O3 and Pr2O3 of 4N as raw materials, and the crystal is grown by using a pulling method. The material is used for realizing the output of red, green and orange lasers.

Description

technical field [0001] The invention relates to the field of laser crystal materials. Background technique [0002] Lasers in the visible light band are widely used in medical treatment (such as skin diseases, eye diseases, etc.), display, lighting, gas detection and other fields. In recent years, the simultaneous pumping of multiple-color lasers on a single crystal has particularly aroused the interest of researchers. People have focused on how to improve the output power and efficiency of multi-color lasers, from materials to devices. [0003] Compared with other rare earth ions, Pr 3+ Ions have very rich transition channels, covering a very wide area, from ultraviolet to mid-infrared bands, such as 3 P 0 → 3 f 2 The transition can produce red emission, 3 P 0 → 3 h 6 The transition can produce yellow and orange light emission, 3 P 0 → 3 h 5 The transition can produce green emission. When putting Pr 3+ Incorporated into a suitable crystal matrix and excited b...

Claims

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Application Information

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IPC IPC(8): C30B29/28
Inventor 王燕涂朝阳游振宇李坚富朱昭捷
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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