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: 2005-04-27
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

Benefits of technology

This patented technology allows for creating small sizes (smaller than 100 µm) of specific materials called calcium fluoride or yttrium oxysulfate through methods like this one described earlier. These smaller particles have unique properties that make them ideal substances for various applications such as medical imagings.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the properties (such as reducing losses) associated with small size laser devices due to their own characteristics such as lack of cohesion or weakness points caused by high temperatures during use. Self-fuzzy resonators have potential applications beyond those mentioned earlier.

Method used

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Examples

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Effect test

Embodiment 1

[0016] 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.

[0017] 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

[0018] 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.

[0019] 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 3Mix 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 Φ35.3mm×60.0mm crystal 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

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Claims

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Application Information

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Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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