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Hafnium oxide single crystal optical fiber and its preparation method and application

A hafnium oxide and optical fiber technology, which is applied in the field of crystals and devices, can solve the problems of unfavorable optical fiber field and difficult cubic phase structure, and achieve the effect of stable optical fiber growth process, small fluctuation of optical fiber diameter and large temperature gradient

Active Publication Date: 2020-09-04
江苏晶英光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a phase transition in hafnium oxide at high temperature, and it is difficult to directly obtain a stable cubic phase structure by the high-temperature melt growth method, which is not conducive to the application in the field of optical fibers

Method used

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  • Hafnium oxide single crystal optical fiber and its preparation method and application
  • Hafnium oxide single crystal optical fiber and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of hafnium oxide single crystal optical fiber is as follows:

[0053] (1) Selection and treatment of source rod and seed crystal

[0054] The prepared HfO with a diameter of 2 mm 2 (Y 2 o 3 Accounting for 10%, molar ratio) rods are mostly used as raw materials and seed crystals, and are fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry on rods at 60°C for 4h.

[0055] (2) Crystal growth

[0056] a. Clean the furnace cavity and laser mirror, fix the prepared raw material rod on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the laser power to 170W to melt the material rod, adjust the center of the material rod to the laser reflection focus, and continue to increase the power to 190W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0057] b. Lower the seed crystal to make it contact with the melting zone, adjust the position of the see...

Embodiment 2

[0061] The preparation method of hafnium oxide single crystal optical fiber is as follows:

[0062] (1) Selection and treatment of source rod and seed crystal

[0063] The prepared HfO with a diameter of 2 mm 2 (Al 2 o 3 Accounting for 10%, molar ratio) rods are mostly used as raw materials and seed crystals, and are fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry at room temperature for 24 hours.

[0064] (2) Crystal growth

[0065] a. Clean the furnace cavity and laser mirror, fix the prepared raw material side on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the power of the laser to 165W to melt the rod, adjust the center of the rod to the laser reflection focus, and continue to increase the power to 185W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0066] b. Lower the seed crystal so that it is in contact with the melting zone, adjust the position of ...

Embodiment 3

[0070] The preparation method of hafnium oxide single crystal optical fiber is as follows:

[0071] (1) Selection and treatment of source rod and seed crystal

[0072] The prepared HfO with a diameter of 4 mm 2 (Er 2 o 3 Accounting for 15%, molar ratio) rods are mostly used as raw materials and seed crystals, and are fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry on rods at 80°C for 4 hours.

[0073] (2) Crystal growth

[0074] a. Clean the furnace cavity and laser mirror, fix the prepared raw material rod on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the laser power to 195W to melt the material rod, adjust the center of the material rod to the laser reflection focus, and continue to increase the power to 220W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0075] b. Lower the seed crystal to make it contact with the melting zone, adjust the position of t...

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Abstract

The invention relates to a hafnium oxide single crystal optical fiber as well as a preparation method and application thereof. The crystal has the chemical composition of stabilizing agent doped hafnium oxide single crystals; the hafnium oxide single crystal optical fiber is fibrous hafnium oxide single crystals with the great aspect ratio; the advantages of the hafnium oxide single crystal and hafnium oxide polycrystalline fiber are realized; the diameter range is 0.5 to 1.5mm; the length is greater than 12cm. An LHPG method is used for growing the hafnium oxide single crystal optical fiber;the melting point is higher than 2750 DEG C. Compared with the prior art, the hafnium oxide single crystal optical fiber has good physical and chemical properties of high heat conductivity, high hardness, high intensity, high toughness, ultra-high wear resistance, chemical corrosion resistant performance and the like, and can be used for preparing novel high-temperature sensors.

Description

technical field [0001] The invention relates to a novel single crystal optical fiber and its preparation method and application, in particular to a hafnium oxide single crystal optical fiber and its preparation method and application, belonging to the technical field of crystals and devices. Background technique [0002] High temperature sensors are mainly used in many fields such as aerospace, weapon manufacturing, nuclear industry, metallurgy, chemical industry, heat treatment, etc., and can measure high temperatures of thousands of degrees. At present, high-temperature thermocouples and tungsten-rhenium thermocouples are generally used in contact high-temperature tests at home and abroad, which basically meet the needs of the medium and low temperature fields. However, with the continuous deepening of research technology, it is necessary to measure the temperature of the combustion chamber, especially the combustion field in some special oxidizing environments, such as th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/16C30B15/00C30B33/02
CPCC30B15/00C30B29/16C30B33/02
Inventor 贾志泰陶绪堂王涛张健
Owner 江苏晶英光电科技有限公司
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