CN102898137A - Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof - Google Patents
Thulium and holmium double-doped yttrium aluminum garnet transparent ceramic and application thereof Download PDFInfo
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- CN102898137A CN102898137A CN2012103884946A CN201210388494A CN102898137A CN 102898137 A CN102898137 A CN 102898137A CN 2012103884946 A CN2012103884946 A CN 2012103884946A CN 201210388494 A CN201210388494 A CN 201210388494A CN 102898137 A CN102898137 A CN 102898137A
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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
The present invention relates to thulium/holmium double doped assorted yttrium aluminum garnet transparent ceramic and uses thereof, belong to special optical ceramic technology field.
Background technology
Ho
3+In the ion
5I
7Attitude and
5I
8Transition between the ground state level can realize the Laser output of 2.1 μ m, is the important rare earth ion of 2 mu m waveband lasers output.Relative other rare earth ion, Ho
3+Ion has a lot of significantly advantages: 1) Ho
3+The stimulated emission cross section of ion approximately is Tm
3+5 times of ion are Nd
3+20 times of ion, fluorescence lifetime long (8ms) is conducive to energy storage, is hopeful to realize efficient Q-switch running; 2) when short pulse turns round than Tm
3+Ion is difficult for causing the destruction of material; 3) Ho
3+The atmosphere through performance of the optical maser wavelength 2.09um of ion output compares Tm
3+The optical maser wavelength 2.01um of ion output is more superior.But, be positioned at Ho
3+Emission wavelength is the LD of 1.9 μ m in the absorption band, have non-constant width emission band (＞12nm) and low brightness, therefore can not with Ho
3+The doped crystal efficient coupling is realized laser pumping output.And employing Tm
3+As the Tm of sensitizing agent, Ho mixes crystal altogether can utilize Tm
3+Ion shifts to increase Ho in the strong absorption at 800nm place by energy
3+1.9 μ m place absorbs, thereby improves efficiency of conversion and obtain efficient Laser output.
Yttrium aluminum garnet (YAG) crystal is the best laser host crystal of over-all properties that people obtain in exploring new crystal so far after calcium wolframate, structure with isometric system, isotropy has preferably optics and mechanical properties, is suitable for the doping of various active ions.Therefore thulium/holmium double doped assorted yag crystal is one of preferred material that produces 2.1 μ m laser.
Laser transparent ceramic has monocrystalline and the not available advantage of glass laser material, has been subject to people and has more and more paid close attention to.(1) pottery has the spectral response curve similar to monocrystalline, but mechanical property is better than monocrystalline and glass; (2) sintering temperature is low, and preparation cycle is short, and it is lower that material prepares overall expenses; The restriction that (3) can break through the effect of segregation realizes high-concentration dopant; (4) large size disc sample can be prepared, and multilayer and multi-functional composite structure can be realized;
Therefore, the thulium/holmium double doped assorted yttrium aluminum garnet transparent ceramic towards application such as eye-safe, remote sensing, optical communication, medical treatment has broad application prospects.
Summary of the invention
The object of the present invention is to provide a kind of new ceramic gain media for 2.1 μ m Laser outputs, i.e. thulium/holmium double doped assorted yttrium aluminum garnet transparent ceramic.
Described crystalline ceramics consists of Tm
aHo
bY
(3-a-b)Al
5O
12, 0.03≤a≤0.3,0.0075≤b≤0.06 wherein, namely Tm ion doping concentration is 1 at.% ~ 10 at.%, Ho ion doping concentration is 0.25 at.% ~ 2 at.%.
The above thickness straight line of described crystalline ceramics 2mm transmitance is greater than 80%.
Described crystalline ceramics is for generation of 2.1 μ m Laser outputs, and this wave band has wide application at eye-safe, remote sensing, optical communication, aspect medical.
Description of drawings
Fig. 1 is the photo in kind of embodiment 1 sample.
Fig. 2 is the transmitance figure of embodiment 1 sample.
Fig. 3 is the photo in kind of embodiment 2 samples
Fig. 4 is the transmitance figure of embodiment 2 samples.
Embodiment
Embodiment 1
According to the 6 at.% Tm of 62.5g, the required quality weighing of 0.5 at.% Ho:YAG is with α-Al of 26.15g
2O
3Powder, the Y of 32.49g
2O
3Powder, the Tm of 3.56g
2O
3Powder, 0.29gHo
2O
3Powder, the TEOS of 0.25g, the oleic acid of 0.3g is put into high-purity agate jar, adds the high purity aluminium oxide ball of 180g, 82g dehydrated alcohol, mixing and ball milling 24h.Behind the ball milling that slurry is dry in 80 ℃ of baking ovens, to put into agate mortar after dry 48 hours and grind, powder is crossed 200 mesh sieves.With the forcing spindle of 2 ~ 10Mpa to unidirectional pressurization, the disk of compression moulding Φ 10mm, again cold isostatic compaction under the pressure of 200Mpa.The green compact of isostatic pressing are put into tube furnace be warmed up to 800 ℃ with 1 ℃/min temperature rise rate under oxygen atmosphere, be incubated 2 hours, oxygen flow is per minute 50 ~ 100ml, and insulation finishes naturally cooling.Green compact after the degreasing are put into vacuum oven, are 1.5 * 10 in vacuum tightness
-4Carry out sintering under the Pa air pressure, be raised to 1400 ℃ with 10 ℃/min temperature rise rate, then with 5 ℃/min temperature rise rate be warming up to 1750 ℃ and 1750 ℃ the insulation 10 hours, drop to 1200 ℃ with 3 ℃/min rate of temperature fall, naturally cool to room temperature, ceramics sample was annealed 10 hours under 1450 ℃ of oxygen atmospheres, obtained to be of a size of 3 * 3 * 3.83mm after cutting and polishing
3Tm, Ho:YAG crystalline ceramics piece.Fig. 1 is 6 at.% Tm, the photo in kind of 0.5 at.% Ho:YAG ceramic block, the straight line transmitance of Fig. 2 for recording with spectrophotometer.
Embodiment 2
According to the 5.5 at.% Tm of 20g, the required quality weighing of 0.5 at.% Ho:YAG is with α-Al
2O
3Powder, Y
2O
3Powder, Tm
2O
3Powder, Ho
2O
3Powder, TEOS, oleic acid put into high-purity agate jar, add the high purity aluminium oxide ball of 60g, 26g dehydrated alcohol, mixing and ball milling 24h.Behind the ball milling that slurry is dry in 80 ℃ of baking ovens, to put into agate mortar after dry 48 hours and grind, powder is crossed 200 mesh sieves.With the forcing spindle of 2 ~ 10Mpa to unidirectional pressurization, the disk of compression moulding Φ 10mm, again cold isostatic compaction under the pressure of 200Mpa.The green compact of isostatic pressing are put into tube furnace be warmed up to 800 ℃ with 1 ℃/min temperature rise rate under oxygen atmosphere, be incubated 2 hours, oxygen flow is per minute 50 ~ 100ml, and insulation finishes naturally cooling.Green compact after the degreasing are put into vacuum oven, are 1.5 * 10 in vacuum tightness
-4Carry out sintering under the Pa air pressure, be raised to 1400 ℃ with 10 ℃/min temperature rise rate, then with 5 ℃/min temperature rise rate be warming up to 1750 ℃ and 1750 ℃ the insulation 10 hours, drop to 1200 ℃ with 3 ℃/min rate of temperature fall, naturally cool to room temperature.Ceramics sample was annealed 10 hours under 1450 ℃ of oxygen atmospheres, obtained to be of a size of φ 8 * 0.622mm after the polishing
3Tm, Ho:YAG crystalline ceramics microplate.Fig. 3 is 5.5 at.% Tm, the photo in kind of 0.5 at.% Ho:YAG pottery microplate, the straight line transmitance of Fig. 4 for recording with spectrophotometer.
Claims (3)
1. thulium/holmium double doped assorted yttrium aluminum garnet transparent ceramic is characterized in that: this pottery consist of Tm
aHo
bY
(3-a-b)Al
5O
12, 0.03≤a≤0.3,0.0075≤b≤0.06 wherein.
2. by crystalline ceramics claimed in claim 1, it is characterized in that: this crystalline ceramics is when the above thickness of 2mm, and the straight line transmitance is greater than 80%.
3. press crystalline ceramics claimed in claim 1 for generation of 2.1 μ m Laser outputs.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321295A (en) * | 2020-11-04 | 2021-02-05 | 吉林建筑大学 | Preparation method of thulium-holmium double-doped yttrium aluminum garnet laser transparent ceramic |
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| JP2008123471A (en) * | 2006-11-10 | 2008-05-29 | Aicompu Ltd | Print data processing program and recording medium |
| CN101560696A (en) * | 2009-06-03 | 2009-10-21 | 北京雷生强式科技有限责任公司 | Laser crystals doped with holmium, chromium, erbium, thulium and yttrium aluminum garnet, and preparation method thereof |
| CN101985398A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院福建物质结构研究所 | Method for preparing transparent polycrystalline Re:YAG ceramic |
-
2012
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Patent Citations (3)
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|---|---|---|---|---|
| JP2008123471A (en) * | 2006-11-10 | 2008-05-29 | Aicompu Ltd | Print data processing program and recording medium |
| CN101560696A (en) * | 2009-06-03 | 2009-10-21 | 北京雷生强式科技有限责任公司 | Laser crystals doped with holmium, chromium, erbium, thulium and yttrium aluminum garnet, and preparation method thereof |
| CN101985398A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院福建物质结构研究所 | Method for preparing transparent polycrystalline Re:YAG ceramic |
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|---|
| 《Optics and Lasers in Engineering》 20021231 P. Laporta et al. Amplitude and frequency stabilisation of a Tm Ho YAG laser for coherent lidar applications at 2.1mum 第447-457页 1-3 第37卷, * |
| 《Optics Letters》 19910515 Sammy W. Henderson et al. Eye-safe coherent laser radar system at 2.1mum using Tm,Ho:YAG lasers 第773-775页 权利要求1-3 第16卷, 第10期 * |
| P. LAPORTA ET AL.: "Amplitude and frequency stabilisation of a Tm Ho YAG laser for coherent lidar applications at 2.1μm", 《OPTICS AND LASERS IN ENGINEERING》, vol. 37, 31 December 2002 (2002-12-31), pages 447 - 457 * |
| SAMMY W. HENDERSON ET AL.: "Eye-safe coherent laser radar system at 2.1μm using Tm,Ho:YAG lasers", 《OPTICS LETTERS》, vol. 16, no. 10, 15 May 1991 (1991-05-15), pages 773 - 775, XP000202067 * |
| W. B. LIU ET AL.: "Fabrication and characterization of transparent Tm, Ho:YAG ceramic", 《LASER PHYSICS》, vol. 22, no. 10, 3 September 2012 (2012-09-03), pages 1622 - 1626, XP035120662, DOI: doi:10.1134/S1054660X12100155 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321295A (en) * | 2020-11-04 | 2021-02-05 | 吉林建筑大学 | Preparation method of thulium-holmium double-doped yttrium aluminum garnet laser transparent ceramic |
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