Title:
PARAMAGNETIC GARNET-TYPE TRANSPARENT CERAMIC, MAGNETO-OPTICAL DEVICE, AND PRODUCTION METHOD FOR PARAMAGNETIC GARNET-TYPE TRANSPARENT CERAMIC
Document Type and Number:
WIPO Patent Application WO/2022/054596
Kind Code:
A1
Abstract:
A paramagnetic garnet-type transparent ceramic that exhibits a high laser damage threshold, said ceramic being a sintered body of a Tb-containing rare earth-aluminum garnet represented by formula (1), and being characterized in that the average sintered grain size is 10-40 µm, and the insertion loss at a wavelength of 1,064 nm in the optically effective region along the length direction of a 20 mm-long sample is 0.05 dB or less. Formula (1): (Tb1-x-yYxScy)3(Al1-zScz)5O12 (In the formula, 0≤x<0.45, 0≤y<0.08, 0≤z<0.2, and 0.001
Inventors:
MATSUMOTO TAKUTO (JP)
IKARI MASANORI (JP)
TANAKA KEITA (JP)
IKARI MASANORI (JP)
TANAKA KEITA (JP)
Application Number:
PCT/JP2021/031358
Publication Date:
March 17, 2022
Filing Date:
August 26, 2021
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C04B35/50; C01F17/10; C01F17/34; C04B35/64; G02B27/28
Domestic Patent References:
| WO2011132668A1 | 2011-10-27 | |||
| WO2017033618A1 | 2017-03-02 | |||
| WO2018193848A1 | 2018-10-25 |
Foreign References:
| JP2019207340A | 2019-12-05 | |||
| JP2019199386A | 2019-11-21 | |||
| JP2019202916A | 2019-11-28 | |||
| CN104628375A | 2015-05-20 | |||
| JP2011213552A | 2011-10-27 | |||
| JP2002293693A | 2002-10-09 | |||
| JP4107292B2 | 2008-06-25 | |||
| JP2020067523A | 2020-04-30 | |||
| JP2638669B2 | 1997-08-06 |
Other References:
"High Verdet constant of Ti-doped terbium aluminum garnet (TAG) ceramics", OPTICAL MATERIALS EXPRESS, vol. 6, no. 1, 2016, pages 191 - 196
"Fabrication and properties of (Tb Y ) Al O transparent ceramics by hot isostatic pressing", OPTICAL MATERIALS, vol. 72, 2017, pages 58 - 62
"Development of optical grade (Tb Y ) Al O ceramics as Faraday rotator material", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 100, 2017, pages 4081 - 4087
"Effect of (Tb+Y)/Al ratio on Microstructure Evolution and Densification Process of (Tbo. Y o.4)3Als0 Transparent Ceramics", MATERIALS, vol. 12, 2019, pages 300
"Microstructure and Optical Properties of Hot Isostatic Pressed Nd:YAG Ceramics", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 79, 1996, pages 1927 - 1933
"Optical properties and Faraday effect of ceramic terbium gallium garnet for a room temperature Faraday rotator", OPTICAL MATERIALS EXPRESS, vol. 19, no. 16, 2011, pages 15181 - 15187
"Investigation of bulk laser damage in transparent YAG ceramics controlled with microstructural refinement", PROC. OF SPIE, vol. 7132, 2009
"Linear Intercept Technique for Measuring Grain Size in Two-Phase Polycrystalline Ceramics", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 55, 1972, pages 109
"Wavelength Dependence of Laser-Induced Damage: Determining the Damage Initiation Mechanisms", PHYSICAL REVIEW LETTERS, vol. 91, 2003, pages 127402
"Linear Intercept Technique for Measuring Grain Size in Two-Phase Polycrystalline Ceramics", JOURNAL OF THE AMERICAN CERAMICS SOCIETY, vol. 55, 1972, pages 109
"Fabrication and properties of (Tb Y ) Al O transparent ceramics by hot isostatic pressing", OPTICAL MATERIALS, vol. 72, 2017, pages 58 - 62
"Development of optical grade (Tb Y ) Al O ceramics as Faraday rotator material", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 100, 2017, pages 4081 - 4087
"Effect of (Tb+Y)/Al ratio on Microstructure Evolution and Densification Process of (Tbo. Y o.4)3Als0 Transparent Ceramics", MATERIALS, vol. 12, 2019, pages 300
"Microstructure and Optical Properties of Hot Isostatic Pressed Nd:YAG Ceramics", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 79, 1996, pages 1927 - 1933
"Optical properties and Faraday effect of ceramic terbium gallium garnet for a room temperature Faraday rotator", OPTICAL MATERIALS EXPRESS, vol. 19, no. 16, 2011, pages 15181 - 15187
"Investigation of bulk laser damage in transparent YAG ceramics controlled with microstructural refinement", PROC. OF SPIE, vol. 7132, 2009
"Linear Intercept Technique for Measuring Grain Size in Two-Phase Polycrystalline Ceramics", JOURNAL OF AMERICAN CERAMICS SOCIETY, vol. 55, 1972, pages 109
"Wavelength Dependence of Laser-Induced Damage: Determining the Damage Initiation Mechanisms", PHYSICAL REVIEW LETTERS, vol. 91, 2003, pages 127402
"Linear Intercept Technique for Measuring Grain Size in Two-Phase Polycrystalline Ceramics", JOURNAL OF THE AMERICAN CERAMICS SOCIETY, vol. 55, 1972, pages 109
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
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