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公开(公告)号：US20210163310A1
公开(公告)日：2021-06-03
申请号：US16482356
申请日：2018-10-29
发明人： Mikami Makoto , Yoshiki Yamazaki
摘要： A polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is 150 mm or less, a minimum value (A, B, C) is more than 20 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm−1 or less. Moreover, a polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is more than 150 mm and 300 mm or less, a minimum value (A, B, C) is more than 5 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm−1 or less. An object of an embodiment of the present invention is to provide a large and transparent polycrystalline YAG sintered body and its production method.
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公开(公告)号：US11225439B2
公开(公告)日：2022-01-18
申请号：US16957803
申请日：2019-10-28
发明人： Makoto Mikami , Yoshiki Yamazaki
IPC分类号： C04B35/44 , C04B35/505
摘要： A Cr:YAG sintered body including Al, Y, Cr, Ca, Mg, Si, and O, and component contents in the sintered body satisfying conditional expressions of 1) to 3) below, provided in the Conditional expression, each chemical symbol represents a component content (atppm). |(Y+Ca)/(Al+Cr+Si+Mg)−0.6|
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公开(公告)号：US20210024360A1
公开(公告)日：2021-01-28
申请号：US17040114
申请日：2020-01-28
发明人： Yoshiki Yamazaki , Kei Muneyasu , Makoto Mikami
摘要： A negative thermal expansion material, being formed from MxSryBazZn2Si2O7 (wherein M is one or more types of Na and Ca, and x+y+z=1, 0 15. An object of the present invention is to provide a negative thermal expansion material having a low specific gravity, and a negative thermal expansion material having a low Ba content.
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公开(公告)号：US12107378B2
公开(公告)日：2024-10-01
申请号：US17286863
申请日：2019-10-28
发明人： Yoshiki Yamazaki , Makoto Mikami
CPC分类号： H01S3/0625 , H01S3/0612 , H01S3/0617 , C03C4/08 , H01S3/16 , H01S3/1643 , H01S3/17 , H01S2301/02
摘要： A light absorbing layer which is bonded to a laser medium to configure a bonded body, wherein the light absorbing layer is formed from a glass material and, in an oscillation wavelength (wavelength of 650 nm or more and less than 1400 nm) of the laser medium, an absorption coefficient is 0.1 to 10.0 cm−1, a difference in refractive index between the light absorbing layer and the laser medium is within ±0.1, and a difference in linear thermal expansion coefficient between the light absorbing layer and the laser medium is within ±1 ppm/K. The present invention relates to a light absorbing layer for preventing parasitic oscillation, and aims to provide a material capable of suppressing the manufacturing cost and which can be easily processed for preparing a bonded body.
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公开(公告)号：US11905175B2
公开(公告)日：2024-02-20
申请号：US17040114
申请日：2020-01-28
发明人： Yoshiki Yamazaki , Kei Muneyasu , Makoto Mikami
CPC分类号： C01B33/32 , C01B33/24 , C01P2006/32 , C01P2006/90
摘要： A negative thermal expansion material, being formed from MxSryBazZn2Si2O7 (wherein M is one or more types of Na and Ca, and x+y+z=1, 0 15. An object of the present invention is to provide a negative thermal expansion material having a low specific gravity, and a negative thermal expansion material having a low Ba content.
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公开(公告)号：US11434143B2
公开(公告)日：2022-09-06
申请号：US16482356
申请日：2018-10-29
发明人： Mikami Makoto , Yoshiki Yamazaki
摘要： A polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is 150 mm or less, a minimum value (A, B, C) is more than 20 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm−1 or less. Moreover, a polycrystalline YAG sintered body, wherein, when dimensions of a smallest rectangular solid surrounding a YAG sintered body are A mm×B mm×C mm, a maximum value (A, B, C) is more than 150 mm and 300 mm or less, a minimum value (A, B, C) is more than 5 mm and 40 mm or less, and an optical loss coefficient when light of a wavelength of 300 to 1500 nm (excluding wavelengths which result in absorption of light by an additive element) is transmitted therethrough is 0.002 cm−1 or less. An object of an embodiment of the present invention is to provide a large and transparent polycrystalline YAG sintered body and its production method.
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