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Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof

A technology of yttrium aluminum garnet and transparent ceramics is applied in the field of thulium holmium double doped yttrium aluminum garnet transparent ceramics, which can solve the problems of low brightness, coupling and the like

Inactive Publication Date: 2013-01-30
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

Problems solved by technology

However, in Ho 3+ LDs with an emission wavelength of 1.9 μm in the absorption band have a very broad emission band (>12nm) and low brightness, so they cannot be compared with Ho 3+ Efficient coupling of doped crystals for laser pump output

Method used

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  • Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof
  • Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof
  • Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] According to the required mass of 62.5g of 6 at.% Tm, 0.5 at.% Ho:YAG, 26.15g of α-Al 2 o 3 Powder, 32.49g of Y 2 o 3 Powder, Tm of 3.56g 2 o 3 Powder, 0.29gHo 2 o 3 For powder, 0.25g of TEOS and 0.3g of oleic acid were put into a high-purity agate ball mill jar, 180g of high-purity alumina balls and 82g of absolute ethanol were added, and mixed ball milled for 24 hours. After ball milling, the slurry was dried in an oven at 80°C, and after drying for 48 hours, it was put into an agate mortar and ground, and the powder was passed through a 200-mesh sieve. Use 2~10Mpa pressure to press axially and unidirectionally, press and form a Φ10mm disc, and then cold isostatically press under a pressure of 200Mpa. Put the isostatically pressed green body into a tube furnace and raise the temperature to 800°C at a rate of 1°C / min under an oxygen atmosphere, keep it warm for 2 hours, and the oxygen flow rate is 50-100ml per minute, and cool naturally after the hold. The degr...

Embodiment 2

[0017] Weigh α-Al according to the mass required for 20 g of 5.5 at.% Tm, 0.5 at.% Ho:YAG 2 o 3 Powder, Y 2 o 3 Powder, Tm 2 o 3 Powder, Ho 2 o 3 Put the powder, TEOS, and oleic acid into a high-purity agate ball mill jar, add 60g of high-purity alumina balls, 26g of absolute ethanol, and mix and ball mill for 24 hours. After ball milling, the slurry was dried in an oven at 80°C, and after drying for 48 hours, it was put into an agate mortar and ground, and the powder was passed through a 200-mesh sieve. Use 2~10Mpa pressure to press axially and unidirectionally, press and form a Φ10mm disc, and then cold isostatically press under a pressure of 200Mpa. Put the isostatically pressed green body into a tube furnace and raise the temperature to 800°C at a rate of 1°C / min under an oxygen atmosphere, keep it warm for 2 hours, and the oxygen flow rate is 50-100ml per minute, and cool naturally after the hold. The degreased green body is put into a vacuum furnace, and the vacu...

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Abstract

The invention relates to thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof. The constitute of the transparent ceramic is shown in a formula TmaHobY(3-a-b)Al5O12, wherein a is more than or equal to 0.03 and less than or equal to 0.3, and b is more than or equal to 0.0075 and less than or equal to 0.06. The straight line transmittance of the prepared transparent ceramic of which the thickness is more than 2mm is more than 80 percent and is equivalent to that of a crystal with the corresponding constitute. The transparent ceramic is used for producing output of laser of which the wavelength is 2.1 mu m, and the wavelength can be widely applied to human eye safety, remote sensing, photo-communication and medical treatment.

Description

technical field [0001] The invention relates to thulium-holmium double-doped yttrium-aluminum garnet transparent ceramics and applications thereof, belonging to the technical field of special optical ceramics. Background technique [0002] Ho 3+ in ions 5 I 7 State and 5 I 8 The transition between ground state energy levels can achieve 2.1 μm laser output, and it is an important rare earth ion for 2 μm band laser output. Relative to other rare earth ions, Ho 3+ Ions have many obvious advantages: 1) Ho 3+ The stimulated emission cross section of the ion is about Tm 3+ 5 times as many ions as Nd 3+ 20 times that of ions, the fluorescence lifetime is long (8ms), it is beneficial to energy storage, and it is hoped to realize efficient Q-switching operation; 2) it is better than Tm in short pulse operation 3+ Ions are not easy to cause material damage; 3) Ho 3+ Atmospheric transmission performance ratio Tm of laser wavelength 2.09um output by ion 3+ The laser wavelengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/505
Inventor 曹永革费斌杰郭旺黄秋凤陈剑王文超唐飞
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI