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A rare earth ion ln3+ doped gadolinium strontium aluminate laser crystal

A rare earth ion, laser crystal technology, applied in lasers, crystal growth, phonon exciters, etc., can solve the problems of narrow absorption spectrum, unsuitable for laser diode pumping, etc. The effect of good thermal and mechanical properties

Active Publication Date: 2019-04-16
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

However, it has the disadvantage of narrow absorption spectrum and is not suitable for laser diode pumping, and laser diode pumping is the development direction of laser pumping sources.

Method used

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  • A rare earth ion ln3+ doped gadolinium strontium aluminate laser crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Growth of Tm by pulling method 3+ :Gd 2 SrAl 2 o 7 single crystal.

[0020] Will be according to molecular formula Tm 2x Gd 2-2x SrAl 2 o 7 (x=0.001, 0.004, 0.2, 0.3, 0.5) in the molar ratio of each substance accurately weighed Tm 2 o 3 、Gd 2 o 3 , SrCO 3 and Al 2 o 3 Mix and grind evenly. After tableting, react in solid phase at 1200°C for 24 hours in a muffle furnace. After taking it out, grind and tablet again, and heat up to 1500°C for 24 hours. Load the above synthesized samples into In the iridium gold crucible, put it into the pulling furnace, adopt the pulling method, in N 2 In the atmosphere, when the growth temperature is 1780°C, the crystal rotation speed is 10 rpm, and the pulling speed is 1 mm / h, large-sized, high-quality Tm 3+ :Gd 2 SrAl 2 o 7 single crystal.

Embodiment 2

[0021] Example 2: Growth of Nd by pulling method 3+ :Gd 2 SrAl 2 o 7 single crystal.

[0022] will be according to the molecular formula Nd 2x Gd 2-2x SrAl 2 o 7 (x=0.001, 0.005, 0.1, 0.3, 0.5) in the molar ratio of each substance accurately weighed Nd 2 o 3 、Gd 2 o 3 , SrCO 3 and Al 2 o 3 Mix and grind evenly. After tableting, react in solid phase at 1200°C for 24 hours in a muffle furnace. After taking it out, grind and tablet again, and heat up to 1500°C for 24 hours. Load the above synthesized samples into In the iridium gold crucible, put it into the pulling furnace, adopt the pulling method, in N 2 In the atmosphere, when the growth temperature is 1780 °C, the crystal rotation speed is 15 rpm, and the pulling speed is 0.5 mm / h, large-size, high-quality Nd 3+ :Gd 2 SrAl 2 o 7 single crystal.

Embodiment 3

[0023] Example 3: Growth of Yb by pulling method 3+ :Gd 2 SrAl 2 o 7 single crystal.

[0024] will be according to the molecular formula Yb 2x Gd 2-2x SrAl 2 o 7 (x=0.001, 0.008, 0.15, 0.25, 0.5) in the molar ratio of each substance accurately weighed Yb 2 o 3 、Gd 2 o 3 , SrCO 3 and Al 2 o 3 Mix and grind evenly. After tableting, react in solid state at 1200°C for 24 hours in a muffle furnace. After taking it out, grind and tablet again, and heat up to 1500°C for 24 hours. Load the above synthesized samples into In the iridium gold crucible, put it into the pulling furnace, adopt the pulling method, in N 2 In the atmosphere, when the growth temperature is 1780 °C, the crystal rotation speed is 20 rpm, and the pulling speed is 0.8 mm / h, large-sized and high-quality Yb 3 + : Gd 2 SrAl 2 o 7 single crystal.

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Abstract

The invention relates to a rare earth ion Ln<3+>-doped gadolinium strontium aluminate laser crystal. The laser crystal is Ln<3+>:Gd2SrAl2O7, wherein Ln<3+> is equal to Nd<3+>, Yb<3+>, Tm<3+>, Dy<3+>, Er<3+> and Ho<3+>, and the doping concentration is 0.1at%-50at%; and the single crystal belongs to a tetragonal system, the space group is I4 / mmm, the cell parameters are as follows: a and b are equal to 3.7052-3.73149 angstroms, c is equal to 19.781-19.9857 angstroms, alpha, beta and gamma are equal to 90 degrees, V is equal to 271.56-278.28 cubic angstroms, and z is equal to 2. According to the single crystal, the lattice site of a trivalent gadolinium ion in a lattice is replaced with a trivalent rare earth ion. The compound is a congruent melting compound with a melting point of 1780 DEG C, and the single crystal with high optical quality and large size can grow by virtue of a pulling method and can be taken as the laser crystal.

Description

technical field [0001] The invention relates to the technical field of optoelectronic functional materials, especially the field of laser crystal materials. Background technique [0002] In recent years, with the rapid development of laser technology, it has been widely used in many fields such as optics, communication, medicine, military, etc., especially all-solid-state lasers, which have attracted people's attention because of their small size, low price, and simple structure. . All-solid-state lasers generally generate laser light by pumping laser crystals with laser diodes, and the core is laser crystals. Laser crystals are composed of host crystals and active ions, and their various physical and chemical properties are determined by the host crystals, while their spectral characteristics and fluorescence lifetime are mainly determined by the active ions. [0003] At present, the most widely used laser crystal is yttrium aluminum garnet crystal doped with neodymium io...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22C30B15/00H01S3/16
CPCC30B15/00C30B29/22H01S3/1603
Inventor 苑菲菲林州斌孙士家张莉珍黄溢声
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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