MAGNETO-OPTICAL MATERIAL, METHOD FOR PRODUCING SAME AND MAGNETO-OPTICAL DEVICE

Title:

MAGNETO-OPTICAL MATERIAL, METHOD FOR PRODUCING SAME AND MAGNETO-OPTICAL DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/008553

Kind Code:

A1

Abstract:

Provided is a magneto-optical material which does not absorb fiber laser light in a wavelength range of 0.9-1.1 μm and does not cause a thermal lens, while having a larger Verdet constant than TGG crystals, and which is suitable for constituting a magneto-optical device such as an optical isolator. This magneto-optical material is formed of a single crystal of a rare earth oxysulfide that is represented by formula (1) or a transparent ceramic which contains, as a main component, a rare earth oxysulfide that is represented by formula (1), and this magneto-optical material has a Verdet constant of 0.14 min/(Oe·cm) or more at the wavelength of 1,064 nm. (TbxR1-x)2O2S (1) (In the formula, x is 0.3 or more but less than 1; and R represents at least one rare earth element that is selected from the group consisting of yttrium, lutetium, gadolinium, holmium, scandium, ytterbium, europium and dysprosium.)

Inventors:

IKARI MASANORI (JP)

Application Number:

PCT/JP2014/064953

Publication Date:

January 22, 2015

Filing Date:

June 05, 2014

Export Citation:

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Assignee:

SHINETSU CHEMICAL CO (JP)

International Classes:

G02B27/28; C01F17/00; C04B35/50

Foreign References:

JP2010285299A	2010-12-24
JP2011121837A	2011-06-23
JP2004123884A	2004-04-22
JPH03252495A	1991-11-11
JP2011213552A	2011-10-27
JP2002293693A	2002-10-09
JP2010285299A	2010-12-24
JP2011121837A	2011-06-23
JP2000255947A	2000-09-19
JP2000266947A	2000-09-29

Other References: