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Blended ytterbium boric acid Gd yttrium oxygen calcium self-frequency doubling laser crystal

A technology of laser crystal and ytterbium-doped boric acid, which is applied in crystal growth, single crystal growth, single crystal growth, etc., to achieve the effect of short growth cycle

Inactive Publication Date: 2008-09-03
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

To date, Yb has been grown by the pulling method 3+ :Gd 1-x Y x Ca 4 O(BO 3 ) 3 crystal, and with Yb 3+ :Gd 1-x Y x Ca 4 O(BO 3 ) 3 The crystal is the working substance, and the laser output obtained by self-frequency doubling technology has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: The doping concentration is 5.0 at.% Yb grown by pulling method 3+ Ionic Yb 3+ :Gd 1-x Y x Ca 4 O(BO 3 ) 3 Self frequency doubling laser crystal.

[0018] The x value is 0.275, which will accurately weigh the CaCO according to the ratio 3 、H 3 BO 3 , Yb 2 o 3 , Y 2 o 3 、Gd 2 o 3 Mix and grind evenly. After tableting, perform solid-phase synthesis reaction at 1000°C in a muffle furnace for 18 hours, take out and mash, mix and tablet, and place in a muffle furnace at a constant temperature of 1200°C for 20 hours. Put the raw materials synthesized twice into the iridium pot, and use the pulling method in an inert gas (N 2 ) in a protective atmosphere, using (010) oriented seed crystals, the growth temperature is 1496°C, the pulling speed is 0.5mm / h, and the rotation speed is 25rmp, and high-quality Yb with a crystal size of Φ30.0mm×57.7mm is grown. 3+ Doping concentration of 5.0at.% Yb 3+ :GdYCa 4 O(BO 3 ) 3 crystals.

Embodiment 2

[0019] Example 2: The doping concentration is 20.0 at.% Yb grown by pulling method 3+ Ionic Yb 3+ :Gd 1-x Y x Ca 4 O(BO 3 ) 3 Self frequency doubling laser crystal.

[0020] The x value is 0.425, which will accurately weigh the CaCO according to the ratio 3 、H 3 BO 3 , Yb 2 o 3 , Y 2 o 3 、Gd 2 o 3 Mix and grind evenly, and perform solid-phase synthesis reaction at 1050° C. for 16 hours in a muffle furnace after tableting. The synthesized samples were pressed into tablets again, and placed in a muffle furnace at a constant temperature of 1200°C for 28 hours. Using the pulling method to grow in an inert gas (Ar) protective atmosphere, using a seed crystal in the (201) direction, the growth temperature is 1510°C, the pulling speed is 1.5mm / h, and the rotation speed is 30rmp, and a diameter of 35.3mm×60.0mm is grown. High quality Yb 3+ Doping concentration of 20.0at.% Yb 3+ :GdYCa 4 O(BO 3 ) 3 crystals.

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Abstract

The present invention relates to artificial crystal, and is especially one kind of self-frequency doubling laser crystal material Yb3+:Gd1-xYxCa4O(BO3)3 and its preparation process. The crystal belongs to the moniclinic system, has space group Cm; has the crystal cell parameter of a=8.080 angstrom, b=16.014 angstrom, c=3.539 angstrom, beta=101.18 deg, and V=449.0 cubic angstrom; and refractive index of 1.69. The monocrystal is grown in Czochralski process at the grown temperature of 1481-1550 deg.c, pulling rate of 0.5-3 mm / hr, crystal rotation speed of 15-40 rpm. The monocrystal has high quality and large size.

Description

technical field [0001] The invention relates to the field of artificial crystals and crystal growth in the technical field of optoelectronic functional materials, in particular to a laser crystal material as a working substance in a solid-state laser. Background technique [0002] Laser crystal is the working substance of solid-state laser. It refers to the luminescent material that absorbs the pump light energy and converts it into laser output through the discrete luminescent center with the crystal as the substrate; while the nonlinear optical crystal uses the light wave to pass through the dielectric. The non-linear response of polarization reacts to the light wave to form a crystal material with harmonics at the sum frequency, difference frequency, etc., and the crystal with the second harmonic generation effect, that is, the frequency doubling effect, is called a frequency doubling crystal. For a long time, people hope to obtain crystal materials with composite functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22H01S3/16
Inventor 王国富张彦林州斌胡祖树张莉珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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