摘要:
Plarfarer optischer Wellenleiter mit einer Kristalleinheitbestehend aus einem nichtmagnetischen Substrat mit einer ersten, auf dem Substrat epitaktisch angebrachten magnetooptischen Schicht und einer zweiten, auf der ersten magnetooptischen Schicht epitaktisch angebrachten magnetooptischen Schicht, wobei beide magnetooptische Schichten aus einem Material auf Basis von Eisen-Granat bestehen und wobei die zweite magnetooptische Schicht einen Brechungsindex n 2 hat, der etwa 1 ×10 -3 bis 1 ×10 -2 größer ist als der Brechungsindex n 1 der ersten magnetooptischen Schicht, wobei zwischen dem Substrat und der ersten magnetooptischen Schicht eine Strahlung aus dem Wellenlängenbereich 1,0≤ λ ≤ 2,5µm absorbierende Schicht aus einem Material auf Basis von Eisengranat angebracht ist, deren Brechungsindex n A größer als der Brechungsindex der ersten. optischen Schicht ist.
摘要:
Un matériau magnétique répondant à la formule : dans laquelle M représente soit un ou plusieurs éléments des terres rares choisis parmi le lutétium, le thulium, l'ytterbium,soit l'yttrium et x 1 , x 2 , y, et y, sont tels que à condition que y, et y, ne soient pas tous deux égaux à 0 et que y, + y 2 soit au plus égal à 1, peut être déposé par épitaxie en phase liquide sur un substrat transparent non maqnétique et former ainsi un film magnétique à forte rotation Faraday, utilisable dans des dispositifs d'affichage et de télécopie.
摘要:
The invention relates to a Bi-substituted rare earth-iron garnet single-crystal film and a method for producing it, and also to a Faraday rotator comprising it. Its object is to provide a magnetic garnet single-crystal film which hardly cracks while it grows or is cooled or polished and worked, and to provide a method for producing it. Its object is also to provide a Faraday rotator produced at high yield by working the magnetic garnet single-crystal film which hardly cracks while it grows or is cooled or polished and worked. In a method for producing a magnetic garnet single-crystal film by growing a Bi-substituted magnetic garnet single crystal in a mode of liquid-phase epitaxial growth, the lattice constant of the growing magnetic garnet single crystal is so controlled that it does not vary or gradually decreases with the growth of the single-crystal film, and then increases with it.
摘要:
Herein disclosed are a Faraday rotator whose Faraday's rotational angle has low temperature-dependency; a method for efficiently preparing the same; a magneto-optical element which makes use of the Faraday rotator and whose characteristic properties are not susceptive to temperature changes; and an optical isolator, which can be provided at a low price. A Faraday rotator consists of a garnet crystal represented by the following compositional formula and having a lattice constant of 12.470 ±0.013Å: in the formula, Ln is an element selected from the group consisting of rare earth elements other than Tb; M1 represents an element selected from the group consisting of Ca, Mg and Sr; M2 is an element selected from the group consisting of Al, Ti, Si and Ge; and a to d are numerals satisfying the following relations: 0≦a≦0.5, 0
摘要翻译:这里公开的是法拉第旋转器,其法拉第的旋转角度具有低的温度依赖性; 一种有效制备它的方法; 使用法拉第旋转器并且其特性不易受温度变化的磁光元件; 以及可以以低价格提供的光隔离器。 法拉第旋转体由以下组成式表示的晶格常数为12.470 +/- 0.013的石榴石晶体组成:(Tbl-(a + b + c)LnaBibMlc)3(Fel-dM2d) 在该式中,Ln是选自除Tb以外的稀土元素的元素; M1表示选自Ca,Mg和Sr的元素; M2是选自Al,Ti,Si和Ge的元素; a至d是满足以下关系的数字:0 = a = 0.5,0
摘要:
This invention relates to an optical magnetic field sensor which comprises a magneto-optical transducer including a polarizer, a magneto-optical element, and an analyzer sequentially arranged in this order along a direction of a light beam being passed, the analyzer being provided so as to make the direction of a transmitted light beam through the magneto-optical element different from that of the polarizer so that a magnetic field intensity to be measured is detected as an output light intensity; a first lens optically connected via the polarizer to an end of the magneto-optical element; a first optical fiber for inputting a light beam to the first lens; a second lens optically connected via the analyzer to the other end of the magneto-optical element; and a second optical fiber for outputting a light beam from the second lens wherein said first optical fiber/said magneto-optical element and said magneto-optical element and said second optical fiber are optically arranged to constitute a confocal optical system through the first and second lenses, and the first and second optical fibers are arranged substantially in axial symmetry with respect to said magneto-optical element.
摘要:
The magnetostatic wave device comprises a single crystal substrate made of Gd 3 Ga 5 O 12 , a magnetic garnet single crystal film provided on the single crystal substrate and at least one transducer provided on the magnetic garnet single crystal film. The magnetic garnet single crystal film has {111} plane and is made of a material expressed by the formula (YR 1 ) 3 (FeR 2 ) 5 O 12 , where R 1 is at least one element selected from La, Bi, Lu and Gd, R 2 is at least one element selected from Ga, Al, In and Sc and Y and Fe are the main components with respect to R 1 and R 2 . In the magnetostatic wave device, a DC magnetic field is applied to the magnetic garnet single crystal film so that a magnetostatic surface wave propagates on the magnetic garnet single crystal film in a direction of 〈110〉 axis on {111} plane of the magnetic garnet single crystal film.
摘要:
A bismuth-substituted rare earth iron garnet single crystal film is represented by a general equation Tb x Lu y Bi 3-x-y Fe 5-z Al z O₁₂ (where 0.09 ≦ y/x ≦ 0.23, 1.40 ≦ x + y ≦ 1.70, 0.20 ≦ z ≦ 0.38) grown on a non-magnetic garnet substrate (CaGd)₃(MgZrGa)₅O₁₂ having a lattice constant of 12.490 Å - 12.500 Å by a liquid phase epitaxial method. The bismuth-substituted rare earth iron garnet single crystal film satisfies three conditions that (1) the Faraday effect is large, i.e., the film thickness required for the Faraday rotator at a wavelength of 1.55 µm is 450 µm or less, (2) the saturated magnetic field is 800 (Oe) or less, and (3) the temperature coefficient α is 0.07 deg/°C or less.