Infrared Absorbing High Aluminosilicate Glass-Ceramics Doped with Samarium and Ytterbium

A high-aluminosilicate, infrared absorption technology, applied in the field of inorganic non-metallic photoelectric information and functional materials, can solve the problems of reducing the cooling efficiency of the cooling liquid on the gain medium, complex manufacturing process, and reducing laser efficiency, etc., to achieve extended use The effect of life and working frequency, improving laser efficiency and increasing crystallization performance

Active Publication Date: 2018-04-17
HANGZHOU INSTITUTE OF OPTICS AND FINE MECHANICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Analysis of the emission spectrum of the xenon lamp and the absorption spectrum of the neodymium ion shows that the main output spectrum range of the xenon lamp is 400-1000nm, while the main absorption peaks of the neodymium ion are around 350nm, 530nm, 580nm, 750nm, 800nm ​​and 870nm, so the xenon lamp is at 875-1000nm. The emission spectrum of 1000nm will be mainly absorbed by the cooling liquid (water or other liquid) in the laser, which indirectly reduces the cooling efficiency of the cooling liquid on the gain medium; in addition, due to the Nd 3+ : The high stimulated emission cross-section of YAG crystal and neodymium-doped laser glass will form parasitic oscillations in large sizes, which will affect the laser efficiency. Therefore, it is also necessary to use materials with absorption at the laser wavelength on the side of the gain medium to suppress parasitic oscillations
[0004] At present, in the large-scale sheet-shaped high-power neodymium glass laser device, the copper-doped edge glass adopted suppresses its amplified spontaneous emission (CN101976796B, method for suppressing large-scale sheet-shaped laser neodymium glass amplified spontaneous emission; CN102875014B, laser glass In this system, the glass does not affect the pumping light path, so its absorption in the range of 550-1200nm does not affect the laser efficiency, but in the repetition frequency high-energy rod laser cavity, the glass will Absorb the emission spectrum of the xenon lamp at 550-875nm, thereby greatly reducing the laser efficiency; while in Nd 3+ : In the YAG crystal laser cavity, the samarium-doped isolating tubes of Schott and American kigre companies are currently used abroad. The glass is made of conventional lithium silicate glass. Although the thermal shock resistance can be improved through ion exchange, the manufacturing process Complicated, with limited strength improvement, the filter tube will burst under high repetition frequency and high energy pumping

Method used

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  • Infrared Absorbing High Aluminosilicate Glass-Ceramics Doped with Samarium and Ytterbium
  • Infrared Absorbing High Aluminosilicate Glass-Ceramics Doped with Samarium and Ytterbium
  • Infrared Absorbing High Aluminosilicate Glass-Ceramics Doped with Samarium and Ytterbium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A glass-ceramic filter material with ultraviolet cut-off for xenon lamp spectrum, the glass has tunable cut-off for xenon lamp spectrum in the range of 400-600nm.

[0024] 1. Preparation process:

[0025] The first step: the formula is (by mole percentage):

[0026] Composition mol%

[0027] SiO 2 50

[0028] Al 2 o 3 35

[0029] MgO 10

[0030] ZnO2

[0031] Li 2 O 1.7

[0032] ZrO 2 0.5

[0033] TiO 2 0.2

[0034] SM 2 o 3 0.5

[0035] Yb 2 o 3 0.1

[0036] Step two:

[0037] According to the ingredients of the formula given in the first step, the raw materials are fully mixed evenly;

[0038] Step 3: At 1500°C, add the mixture to the quartz crucible / corundum crucible, platinum

[0039] In a crucible, melt for 4 hours by melting method;

[0040] Step 4: Clarify the glass liquid at 1550°C for 6 hours;

[0041] The sixth step: carry out mechanical stirring for 9 hours;

[0042] Step 7: Pour the prepared glass liquid into graphite or cast i...

Embodiment 2

[0047] Test and application are the same as Example 1, but the preparation process is different, as follows:

[0048] Preparation Process:

[0049] The first step: the formula is (by mole percentage):

[0050] Composition mol%

[0051]

[0052] Step two:

[0053] According to the ingredients of the formula given in the first step, the raw materials are fully mixed evenly;

[0054] Step 3: At 1550°C, add the mixture to the quartz crucible / corundum crucible and platinum crucible in 4 to 6 times, and melt it for 4 hours by melting method;

[0055] Step 4: Clarify the molten glass at 1580°C for 6 hours;

[0056] The sixth step: carry out mechanical stirring for 9 hours;

[0057] Step 7: Pour the prepared glass liquid into graphite or cast iron molds to shape;

[0058] Step 8: After holding the heat for 4 hours at 800°C in the muffle furnace, perform conventional annealing treatment;

[0059] Step 9: Cut and finely grind the obtained glass, and after polishing, carry out ...

Embodiment 3

[0062] Other implementation methods are all the same as Examples 1 and 2, except that the formula in the preparation process is different. Some components are listed below.

[0063] Example

3

4

5

6

7

8

9

10

11

12

13

14

SiO 2

40

50

48

45

40

40

40

40

45

50

45

50

Al 2 o 3

25

35

20

30

35

35

35

35

30

25

25

25

Li 2 o

5

0

2

1.5

0

0

0

0

2

5

0

2

MgO

15

5

10

10

15

15

10

5

0

5

10

10

ZnO

0

5

10

5

4.5

4.5

5

10

15

5

4

3

TiO 2

10

1.5

3

4.5

0

0

4.5

7

3.5

4

10

3

ZrO 2

2

0.5

2

0.5

0.5

0.5

0.5

0.5

0.5

1

2

0.5

CeO 2

0

0.2

2

0

3

3

2

1.5

3

2

3

5

SM 2 o 3

3

2.8

2.5

3

1.5

2

...

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PUM

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Abstract

The invention provides a samarium and ytterbium doped infrared absorption high aluminum silicate microcrystalline glass. The filter tube glass comprises the following components by molar percentage: 40-50mol% of SiO2, 25-35mol% of Al2O3, 5-15mol%of MgO, 0-15mol% of ZnO, 0-5mol% of Li2O, 0-10mol% of TiO2, 0.5-2mol% of ZrO2, 0-5mol% of CeO2, 0.5-3mol% of Sm2O3, and 0-0.5mol% of Yb2O3. The glass has thermal conductivity of 1-1.2W / MK, and thermal expansion of the 50-60*10<-7> / K, and can realize absorption in the spectral range of 900-1600 nm through grinding, polishing, and microcrystalline heat treatment. The invention is expected to be used in neodymium glass and YAG laser system to obtain laser output with high frequency and high energy.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic optoelectronic information and functional materials, and relates to a high-aluminum silicate microcrystal doped with samarium and ytterbium, which is suitable for a repetition-frequency high-energy laser system and absorbs in the spectral range of 900-1600nm. Glass and method for its preparation. Background technique [0002] Repetition-frequency high-energy lasers have a wide range of application requirements in the fields of laser weapons, laser cleaning, laser shock strengthening, and titanium sapphire pump sources. The existing gain medium used in the repetition frequency high energy laser mainly includes Nd 3+ :YAG crystal and Nd-doped laser glass. [0003] At present, in high-energy laser devices, xenon lamp is still the most widely used pumping light source. Analysis of the emission spectrum of the xenon lamp and the absorption spectrum of the neodymium ion shows that the main outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/04
CPCC03C10/0045
Inventor 何冬兵李顺光孙时宇胡丽丽
Owner HANGZHOU INSTITUTE OF OPTICS AND FINE MECHANICS
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