Title:
MAGNETOOPTICAL MATERIAL, MANUFACTURING METHOD THEREFOR, AND MAGNETOOPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/037649
Kind Code:
A1
Abstract:
This invention provides a transparent magnetooptical material that is suitable for use in a magnetooptical device such as an optical isolator. Said magnetooptical material comprises either a transparent ceramic consisting primarily of a complex oxide that can be represented by formula (1) or a single crystal of such a complex oxide. Said magnetooptical material does not absorb fiber-laser light in the 0.9-1.1 µm wavelength range, does not cause heat lensing, and has a higher Verdet constant than TGG crystals, with a Verdet constant of at least 0.14 min/(Oe∙cm) at a wavelength of 1,064 nm.
(1) Tb2R2O7
(In formula (1), R represents one or more elements selected from among the group consisting of silicon, germanium, titanium, tantalum, tin, hafnium, and zirconium (but not silicon only, germanium only, or tantalum only).)
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Inventors:
IKARI MASANORI (JP)
Application Number:
PCT/JP2014/074040
Publication Date:
March 19, 2015
Filing Date:
September 11, 2014
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
G02B27/28; C30B29/22; C30B29/32; G02F1/09
Foreign References:
| JP2012036031A | 2012-02-23 | |||
| JP2012082079A | 2012-04-26 | |||
| JP2011213552A | 2011-10-27 | |||
| JP2002293693A | 2002-10-09 | |||
| JP2010285299A | 2010-12-24 | |||
| JP2011121837A | 2011-06-23 | |||
| JP2000266947A | 2000-09-29 | |||
| JP2005330133A | 2005-12-02 | |||
| JP2010241677A | 2010-10-28 |
Other References:
HIROSHI TAKATSU: "Quantumu spin fluctuations in the spin liquid state of Tb2Ti207", ARXIV, ARXIV, 13 December 2011 (2011-12-13), XP080510002
"Rare earth disilicates R Si O (R = Gd, Tb, Dy, Ho): type B", Z., KRISTALLOGR., vol. 218, no. 12, 2003, pages 795 - 801
"Fabrication of transparent La,H f o ceramics from combustion synthesized powders", MAT. RES. BULL., vol. 40, no. 3, 2005, pages 553 - 559
"Fabrication of transparent La Hf 0 ceramics from combustion synthesized powders", MAT. RES. BULL., vol. 40, no. 3, 2005, pages 553 - 559
J. AM. CHEM. SOC., vol. 76, 1954, pages 5242 - 5244
SOLID STATE SCIENCES, vol. 14, 2012, pages 1405 - 1411
J. AM. CERAM. SOC., vol. 52, no. 8, 1969, pages 443 - 446
"Rare earth disilicates R Si O (R = Gd, Tb, Dy, Ho): type B", Z., KRISTALLOGR., vol. 218, no. 12, 2003, pages 795 - 801
"Fabrication of transparent La,H f o ceramics from combustion synthesized powders", MAT. RES. BULL., vol. 40, no. 3, 2005, pages 553 - 559
"Fabrication of transparent La Hf 0 ceramics from combustion synthesized powders", MAT. RES. BULL., vol. 40, no. 3, 2005, pages 553 - 559
J. AM. CHEM. SOC., vol. 76, 1954, pages 5242 - 5244
SOLID STATE SCIENCES, vol. 14, 2012, pages 1405 - 1411
J. AM. CERAM. SOC., vol. 52, no. 8, 1969, pages 443 - 446
Attorney, Agent or Firm:
KOJIMA Takashi et al. (JP)
Takashi Kojima (JP)
Takashi Kojima (JP)
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