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1. 发明授权

US5608570A Article comprising a magneto-optic material having low magnetic moment 失效
标题翻译：本文包括具有低磁矩的磁光材料
公开(公告)号：US5608570A
公开(公告)日：1997-03-04
申请号：US498099
申请日：1995-07-05
申请人： Charles D. Brandle, Jr. , Vincent J. Fratello , Steven J. Licht
发明人： Charles D. Brandle, Jr. , Vincent J. Fratello , Steven J. Licht
IPC分类号： G02F1/00 , H01F10/24
CPC分类号： H01F10/245 , G02F1/0036 , Y10S428/90
摘要： Garnet material according to the invention exhibits a substantially rectangular magnetization loop, with .vertline.H.sub.S .vertline.>.vertline.4.pi.M.sub.S .vertline.Oe, where H.sub.S is the switching magnetic field of the loop, and 4.pi.M.sub.S is the saturation magnetization. The material exhibits "latching" behavior, and can advantageously be used in magneto-optic isolators and other magneto-optic devices. For instance, the material enables manufacture of isolators that do not contain a permanent magnet. An exemplary garnet according to the invention has nominal composition Bi.sub.0.75 Eu.sub.1.5 Ho.sub.0.75 Fe.sub.4.1 Ga.sub.0.9 O.sub.12.
摘要翻译：根据本发明的石榴石材料表现出基本上矩形的磁化回路，其中HS是环路的开关磁场，4πMS是饱和磁化强度。该材料表现出“闭锁”行为，并且可以有利地用于磁光隔离器和其它磁光器件中。例如，该材料能够制造不含永久磁铁的隔离器。根据本发明的示例性石榴石具有标称组成Bi0.75Eu1.5Ho0.75Fe4.1Ga0.9O12。

2. 依法登记的发明

USH1155H Optical isolator with improved stabiity 失效
公开(公告)号：USH1155H
公开(公告)日：1993-03-02
申请号：US895211
申请日：1992-06-08
申请人： Vincent J. Fratello , Ralph S. Jameson , Steven J. Licht
发明人： Vincent J. Fratello , Ralph S. Jameson , Steven J. Licht
IPC分类号： G02F1/09
CPC分类号： G02F1/093 , G02F2203/04
摘要： An optical isolator is disclosed which comprises a Faraday rotator disposed between a pair of polarization selective elements (e.g., linear polarizers, birefringent wedges, birefringent plates, etc.). Improvement in isolation stability as a function of variations in temperature and/or signal wavelength are achieved in accordance with the teachings of the present invention by utilizing a Faraday device with a rotation .theta. less than the conventional 45.degree.. A linear reduction in .theta., while resulting in a some signal loss, provides a linear increase in both temperature and wavelength stability.

3. 发明授权

US5146361A Apparatus comprising a magneto-optic isolator utilizing a garnet layer 失效
标题翻译：装置包括利用石榴石层的磁光隔离器
公开(公告)号：US5146361A
公开(公告)日：1992-09-08
申请号：US850148
申请日：1992-03-12
申请人： Steven J. Licht
发明人： Steven J. Licht
IPC分类号： G02F1/00 , G02F1/09
CPC分类号： G02F1/0036 , G02F1/093
摘要： Apparatus according to the invention comprises a magneto-optic isolator. The isolator comprises a magneto-optic member that comprises a single crystal substrate and a single crystal garnet layer on the substrate. The garnet layer comprises a first and a second stratum. The composition of the former is chosen such that the lattice constant of the first stratum material is substantially equal to that of the substrate at a first temperature (e.g., room temperature), and is substantially larger than that of the substrate at a second temperature (e.g., the garnet growth temperature) that is higher than the first temperature. The composition of the second stratum is chosen such that the lattice constant of the second stratum is less than that of the substrate at the first temperature, and is less than that of the first stratum at the second temperature. Wafers according to the invention typically are less subject to fracture than analogous prior art wafers.
摘要翻译：根据本发明的装置包括磁光隔离器。隔离器包括在基板上包括单晶基板和单晶石榴石层的磁光部件。石榴石层包括第一层和第二层。选择前者的组成使得第一层材料的晶格常数在第一温度（例如室温）下基本上等于衬底的晶格常数，并且在第二温度下基本上大于衬底的晶格常数例如，石榴石生长温度）高于第一温度。选择第二层的组成使得第二层的晶格常数在第一温度下小于衬底的晶格常数，并且小于第二层的第一层的晶格常数。根据本发明的晶片通常比类似的现有技术的晶片更少受到破坏。

4. 发明授权

US4810325A Liquid-phase-epitaxy deposition method in the manufacture of devices 失效
标题翻译：液相外延沉积方法在器件制造中的应用
公开(公告)号：US4810325A
公开(公告)日：1989-03-07
申请号：US62039
申请日：1987-06-15
申请人： Steven J. Licht
发明人： Steven J. Licht
IPC分类号： C30B19/02 , G11C11/14 , H01F41/28 , H01L21/368 , H01L21/20
CPC分类号： C30B19/02 , C30B29/28 , Y10S148/107
摘要： Epitaxial layers are grown from a body of molten material which includes flux and layer constituent components; included in the flux are lead oxide and a small amount of boron trioxide. As compared with prior-art processing in the absence of boron trioxide, enhanced yield is realized as believed to be due to reduced adhesion of solidifying material entrained upon withdrawal of a substrate after growth. The method is particularly useful in the manufacture of magnetic domain devices designed to operate at extreme temperatures, as well as in the manufacture of magneto-optic devices such as, e.g., switches, modulators, and isolators.
摘要翻译：外延层从包括焊剂和层组成成分的熔融材料体生长; 助焊剂中含有氧化铅和少量三氧化硼。与不存在三氧化硼的现有技术相比，实现提高的产率，被认为是由于在生长后基材撤出时夹带的凝固材料的附着力降低。该方法在制造设计用于在极端温度下操作的磁畴器件以及制造诸如开关，调制器和隔离器的磁光器件时特别有用。

5. 发明授权

US4277519A Simultaneous formation of garnet epilayer on a plurality of substrates 失效
标题翻译：在多个基板上同时形成石榴石外延层
公开(公告)号：US4277519A
公开(公告)日：1981-07-07
申请号：US122597
申请日：1980-02-19
申请人： Steven J. Licht
发明人： Steven J. Licht
IPC分类号： C30B19/06 , C30B19/10 , B05D5/12
CPC分类号： C30B19/062 , C30B19/068 , C30B19/10
摘要： A specific set of processing steps in the batch production of garnet epilayers yields excellent quality and reproducibility. The process requires (1) agitation of the melt before growth, (2) heat stabilization of the substrates upon extraction from the melt, and (3) extraction from the melt so that the major surfaces of the substrates leave the melt at an angle to the melt surface. Use of these processing steps avoids defects common to batch processing such as fracture of a fraction of the substrates, sever non-uniform properties through the epilayers, and mesa formation on the epilayer.
摘要翻译：石榴石外延片的批量生产中的一组具体处理步骤产生优良的品质和重现性。该方法需要（1）在生长之前搅拌熔体，（2）从熔体中提取时对基材进行热稳定，和（3）从熔体中提取，使得基材的主表面以熔体表面。使用这些加工步骤避免了批处理常见的缺陷，例如一部分基材的断裂，通过外延层破坏不均匀的性质，以及在外延层上形成台面。

6. 发明授权

US4981341A Apparatus comprising a magneto-optic isolator utilizing a garnet layer 失效
标题翻译：装置包括利用石榴石层的磁光隔离器
公开(公告)号：US4981341A
公开(公告)日：1991-01-01
申请号：US380579
申请日：1989-07-14
申请人： Charles D. Brandle, Jr. , Vincent J. Fratello , Steven J. Licht
发明人： Charles D. Brandle, Jr. , Vincent J. Fratello , Steven J. Licht
IPC分类号： G02B27/28 , G02F1/00 , G02F1/09
CPC分类号： G02F1/093 , G02F1/0036
摘要： Apparatus according to the invention comprises magneto-optic isolator means that utilize a novel temperature compensation scheme. The scheme involves the use of a composite magneto-optic member that comprises a first single crystal garnet layer that does not have a compensation temperature within the operating temperature range of the isolator, and further comprises a single crystal garnet layer (the "compensation point layer") that has a compensation temperature within the operating temperature range of the isolator. Exemplarily, the compensation point layer has composition (Bi.sub.0.8; Tb.sub.1.1 Gd.sub.1.1)(Fe.sub.4.6 Ga.sub.0.4)O.sub.12, and is grown on an CMZ:GGG substrate, and the first garnet layer has composition (Bi.sub.1.2 Tb.sub.1.8)(Fe.sub.4.6 Ga.sub.0.4)O.sub.12 and is grown on the compensation point layer. The novel temperature compensation scheme can result in isolators having improved extinction ratio with relatively small additional path length in the magneto-optic material.

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