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Bismuth doped strontium-aluminum-boron based optical glass and preparation thereof

An optical glass, strontium aluminum boron-based technology, applied in the field of bismuth-doped strontium aluminum boron-based optical glass, can solve the problems of reduced transmittance and limited practical application

Inactive Publication Date: 2009-08-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2001, Fujimoto and Nakatsuka reported in the article Jpn.J.App.Phys., 40, (2001) L279 that the pentavalent bismuth ion Bi was prepared under air at a high temperature of 1760°C 5+ Doped Al 2 o 3 -SiO 2 Glass, the existence of a large number of bubbles reduces its transmittance in the infrared region to ~30%, which largely limits the SiO 2 Practical Applications of Base Glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1), according to molar percentage composition: 55SrO 2 -20Al 2 o 3 -23.9B 2 o 3 -1SiO 2 -0.1Bi 2 o 3 (the sum after adding should be equal to 100), take by weighing 20g of raw materials altogether, and after the above-mentioned raw materials are ground and mixed evenly, put in the corundum crucible;

[0023] (2), put the alumina crucible with the above-mentioned charge in a high-temperature box-type furnace, put carbon powder in the high-temperature furnace at the same time, and keep the temperature at 1250 ° C for 3 hours to melt the raw materials into a liquid state, so as to completely eliminate air bubbles, Then quickly pour the melt on a stainless steel plate and flatten it with another steel plate, transfer it to an annealing furnace and anneal at 520°C for 2 hours, then cool it down to room temperature naturally with the furnace, and take it out to obtain bismuth with infrared ultra-broadband luminescence properties Doped strontium aluminum boron glass, t...

Embodiment 2

[0025] (1), according to molar percentage composition: 44SrO 2 -25.5Al 2 o 3 -29B 2 o 3 -0.5K 2 CO 3 -1Bi 2 o 3 (the sum after adding should be equal to 100), take by weighing 20g of raw materials altogether, and after the above-mentioned raw materials are ground and mixed evenly, put in the corundum crucible;

[0026] (2) Put the alumina crucible with the above-mentioned charge in a high-temperature box-type furnace, under the atmosphere of 97% nitrogen and 3% hydrogen, keep the temperature at 1300°C for 2 hours to melt the raw materials into a liquid state, so as to completely eliminate air bubbles , then quickly pour the melt on a stainless steel plate and flatten it with another steel plate, transfer it to an annealing furnace and anneal at 520°C for 2 hours, then cool it down to room temperature naturally with the furnace, and take it out to get the infrared ultra-broadband luminescent performance Bismuth-doped strontium-aluminum-boron glass This glass will produc...

Embodiment 3

[0028] (1), according to molar percentage composition: 50SrO 2 -22Al 2 o 3 -22B 2 o 3 -1SiO 2 -5Bi 2 o 3 , weighed a total of 20g of raw materials, and after the above-mentioned raw materials were ground and mixed evenly, they were placed in a corundum crucible;

[0029] (2) Put the alumina crucible with the above-mentioned materials in a high-temperature box-type furnace, and keep the temperature at 1500°C for 0.5 hours under an ammonia atmosphere to melt the raw materials into a liquid state so as to completely eliminate air bubbles, and then melt the melt Quickly pour it on a stainless steel plate and flatten it with another steel plate, transfer it to an annealing furnace and anneal at 520°C for 2 hours, then cool it down to room temperature naturally with the furnace, and take it out to get bismuth-doped strontium with infrared ultra-broadband luminescence properties Aluminum boron glass, the glass will produce fluorescence under 800nm ​​laser pumping, the fluoresc...

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Abstract

The invention provides bismuth doped Si-Al-B based optical glass and a preparation method thereof. The optical glass is characterized by comprising the following glass matrixes based on molar percentage: 44 to 55 percent of strontium oxide, 20 to 29 percent of aluminum oxide, 20 to 29 percent of diboron trioxide, 0.1 to 5 percent of dibismuth trioxide, and 0.5 to 1 percent of silicon dioxide or lithium carbonate which is added into the glass matrixes as a fusion aid. The fusion temperature of the glass is obviously reduced compared with quartz glass; and the glass has optical performance covering an ultra-wide band of a communication waveband between 1,000 and 1,600nm , and is expected to be applied in the technical fields of an ultra-wide band optical amplifier, a high power laser, a tunable laser and the like.

Description

technical field [0001] The invention relates to optical glass, especially a bismuth-doped strontium-aluminum-boron-based optical glass. The glass can emit fluorescence in the near-infrared communication band, has a long fluorescence lifetime and a wide gain bandwidth, and is suitable for use as a gain medium in optical amplifiers and optical amplifiers. and / or lasers. Background technique [0002] On March 4, 1998, Yasushi Fujimoto of Mitsubishi Cable Industries Co., Ltd. applied for a patent entitled "Manufacturing Method of Doped Quartz Glass, Optical Fiber and Optical Amplifier" (Patent Publication No. 11-29334). They used bismuth-exchanged zeolite as a dispersion medium, combined the sol-gel method and high-temperature melting method, and prepared bismuth-doped bismuth ions in air. 5+ The corresponding optical fiber was drawn out of quartz glass, and the optical amplification at 1.3 μm under 800nm ​​pumping was realized. The fluorescence peak of this glass is located n...

Claims

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Application Information

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IPC IPC(8): C03C3/064C03C3/145
Inventor 邱建备宋志国
Owner KUNMING UNIV OF SCI & TECH
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