Low refractive index high concentration Er3 doped fluorine phosphate glass and its preparing method

A fluorophosphate glass, high-concentration doping technology, applied in the field of fluorophosphate glass, can solve the problems of high erbium concentration, low refractive index, high fluorescence lifetime, etc., and achieve the effect of good anti-devitrification performance and high transition temperature

Inactive Publication Date: 2005-03-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a low-refractive-index high-concentration Er-doped glass for the deficiency that the existing laser glass cannot realize low-refractive index and high-concentration Er ion doping at the same time. 3+ Fluorophosphate glass and preparation method thereof, it has low refractive index, high erbium concentration, high fluorescence lifetime (> 6.5ms)

Method used

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  • Low refractive index high concentration Er3 doped fluorine phosphate glass and its preparing method
  • Low refractive index high concentration Er3 doped fluorine phosphate glass and its preparing method
  • Low refractive index high concentration Er3 doped fluorine phosphate glass and its preparing method

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Embodiment 1

[0027] Embodiment 1: Take the first component as an example. Its preparation steps are as follows:

[0028] Step 1: Calculate the weight percentage of the glass according to the above molar composition, then weigh the raw materials and mix them evenly.

[0029] Step 2: Put the mixture into a platinum crucible and melt it in a silicon carbon rod electric furnace at 1080°C. The melting time is determined according to the amount of raw materials.

[0030] Step 3: After the glass is melted, lower the temperature to 950°C, and inject high-purity nitrogen to achieve atmosphere protection and stirring. The ventilation time depends on the amount of raw materials.

[0031] Step 4: stop the nitrogen flow, raise the temperature of the glass liquid to 1050°C for clarification and homogenization, and the time depends on the amount of raw materials. Then the glass is cooled to 950°C and poured into preheated molds.

[0032] Step 5: Quickly put the glass into the muffle furnace whose temp...

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Abstract

The invention provides a low refractive index high concentration Er doped fluorine phosphate glass and its preparing method, wherein the compositions (by weigh percent) of the glass include, AlF3 30-35%, alkaline earth fluoride RF2 38-46%, YF3 9-11%, KF 0-6%, ErF3 6%, alkaline earth dihydric phosphate R (H2PO4) 2-5%, MgHPO4 3H2O 0-2%, Al(PO#-[3])#-[3] 0-2%. The conventional fusion method is employed to prepare a series of glass based on the composition and technological requirements.

Description

technical field [0001] The invention relates to fluorophosphate glass, especially a kind of low refractive index and high concentration Er-doped glass 3+ Fluorophosphate glass and method for making same. Background technique [0002] The luminescence of erbium ions in the 1520-1560nm region (that is, the C-band) can realize the amplification of optical transmission signals. This amplification method replaces the traditional optical / electrical / optical amplification method, and realizes low-noise and high-gain amplification of signal light. In order to reduce the size of fiber amplifiers and lasers and make the device smaller to meet the requirements of integrated optics, the laser working substance must have high energy storage capacity and effective absorption pumping ability, so the laser working substance must have high rare earth doping concentration. The high nonlinear phenomenon brought about by the high refractive index will have a very adverse effect on the laser wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/12C03C3/247
CPCC03C3/247
Inventor 张丽艳张军杰胡丽丽孙洪涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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