公开(公告)号：US5186866A

公开(公告)日：1993-02-16

申请号：US555723

申请日：1990-07-19

申请人： Toshihiko Ryuo ,  Toshiaki Watanabe

发明人： Toshihiko Ryuo ,  Toshiaki Watanabe

IPC分类号： C30B19/02 ,  C01F17/00 ,  C30B19/00 ,  C30B29/28 ,  H01F10/24 ,  H01F41/28

CPC分类号： H01F41/28 ,  C01F17/0012 ,  C30B19/00 ,  C30B29/28

摘要： A novel oxide garnet single crystal, which can be epitaxially grown on a rare earth-gallium garnet wafer and exhibiting excellent performance as a material of magneto-optical devices, is disclosed. The oxide garnet single crystal, grown on the substrate surface by the liquid-phase epitaxial method, has a chemical composition expressed by the formula(Bi.sub.a Eu.sub.b Ln.sub.1-a-b).sub.3 (Fe.sub.1-c M.sub.c).sub.5 O.sub.12,in which Ln is a rare earth element other europium, e.g. terbium, M is an element selected from the group consisting of aluminum, gallium, indium, and scandium, the subscript a is a positive number defined by 0.15.ltoreq.a.ltoreq.0.6, the subscript b is a positive number defined by 0.01.ltoreq.b.ltoreq.0.2 and the subscript c is a positive number defined by 0.01.ltoreq.c..ltoreq.0.1.

公开(公告)号：US5161049A

公开(公告)日：1992-11-03

申请号：US686422

申请日：1991-04-16

申请人： Masayuki Tanno ,  Toshiaki Watanabe ,  Toshihiko Ryuo

发明人： Masayuki Tanno ,  Toshiaki Watanabe ,  Toshihiko Ryuo

IPC分类号： G02B27/28 ,  G02F1/09

CPC分类号： G02F1/093

摘要： An optical isolator according to the present invention comprises a first polarizer, a Faraday rotator and a second polarizer which are adhered to one another in this order and held in a cylindrical magnet, wherein at least one adhered and supported portion comprises a low melting point glass 7 and 8. As the low melting point glass 7, 8, there may be used, for instance, those mainly comprising lead oxide and boron oxide; zinc oxide, lead oxide and boron oxide; lead oxide, boron oxide and thallium oxide; phosphoric acid and aluminum oxide; zinc oxide and boron oxide; and phosphorous pentaoxide, aluminum oxide and boron oxide. In the optical isolator according to the present invention, a low melting point glass is used for adhering the structural parts for the optical isolator, there is not observed any outgassing phenomenon due to the raise in ambient temperature as in the isolator which is assembled with an adhesive and the discrepancy of the optical axis due to the expansion of the adhesive. As a result, the isolator of the present invention has stable optical properties. Moreover, the underlying plating layer is not peeled off as has been observed in the isolators which is assembled through soldering.

摘要翻译： 根据本发明的光隔离器包括第一偏振器，法拉第旋转器和第二偏振器，它们依次彼此粘附并保持在圆柱形磁体中，其中至少一个粘附和支撑部分包括低熔点玻璃 作为低熔点玻璃7,8，可以使用例如主要包含氧化铅和氧化硼的那些; 氧化锌，氧化铅和氧化硼; 氧化铅，氧化硼和氧化铊; 磷酸和氧化铝; 氧化锌和氧化硼; 和五氧化二磷，氧化铝和氧化硼。 在根据本发明的光隔离器中，使用低熔点玻璃粘附光隔离器的结构部件，由于环境温度升高，没有观察到任何除气现象，如在与 粘合剂和由于粘合剂的膨胀导致的光轴的差异。 结果，本发明的隔离器具有稳定的光学特性。 此外，如在通过焊接组装的隔离器中已经观察到的，底层镀层没有被剥离。