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公开(公告)号：US4359775A
公开(公告)日：1982-11-16
申请号：US178568
申请日：1980-08-15
CPC分类号： H01S5/32308 , H01S5/20 , H01S5/2059
摘要： A semi-conductor laser comprising a crystal having a sequence of layers forming a heterostructure diode and which includes a laser active zone interposed between a pair of semiconductor layers. Each of these semi-conductor layers has a band gap which is greater than that of the layers within the laser active zone. The laser active zone includes a first semiconductor layer having a given band gap, and at least second and third semiconductor layers each having a band gap which is greater than that of the first layer. The first layer is contiguous with and interposed between semiconductor layers each having a band gap which is greater than that of said first layer and forms a pn-junction with one of those contiguous layers. A strip-shaped region of a uniform conductivity type diffused from the surface of the crystal penetrates into at least one layer of the laser active zone but does not penetrate into the first layer.
摘要翻译： 一种半导体激光器，包括具有形成异质结构二极管的层序列的晶体，并且包括插入在一对半导体层之间的激光器活性区域。 这些半导体层中的每一个具有比激光活性区内的层的带隙大的带隙。 激光活性区域包括具有给定带隙的第一半导体层，以及至少第二和第三半导体层，每个半导体层的带隙大于第一层的带隙。 第一层与每个具有大于所述第一层的带隙的带隙相邻并且插入在半导体层之间并且与这些邻接层之一形成pn结。 从晶体表面扩散的均匀导电类型的条状区域穿透至激光活性区域的至少一层，但不会渗入第一层。
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公开(公告)号：US4692926A
公开(公告)日：1987-09-08
申请号：US727251
申请日：1985-04-25
CPC分类号： H01S5/227 , H01S5/2275
摘要： A mushroom-shaped semiconductor stripe laser, particularly with transversal, monomode light distribution and a double heterostructure comprised of a substrate, a laser-active zone, a cover layer and an electrically contacting metal layer for the cover layer with the cover layer being underetched such that a mushroom-shaped structure is formed in which the laser-active zone is constricted to a stripe-shaped region. The ratio of the width of the cover layer to the width of the laser-active zone lies in a range between two and five, and the cover layer is electrically conductively connected with the metal layer on its outer surface as well as on at least one of its side surfaces.
摘要翻译： 伞形半导体条纹激光器，特别是具有横向，单模光分布和双异质结构，包括基底，激光活性区，覆盖层和用于覆盖层的电接触金属层，其覆盖层未被蚀刻 形成蘑菇状结构，其中激光活性区域被收缩成条形区域。 覆盖层的宽度与激光 - 活性区域的宽度的比率在2至5之间的范围内，并且覆盖层与其外表面上的金属层以及至少一个 的侧面。
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公开(公告)号：US3942996A
公开(公告)日：1976-03-09
申请号：US427535
申请日：1973-12-26
申请人： Gunther Arnold , Gabor Paal , Alfred Wilhelm , Kurt Halfar , Hans Peter Vollmer
发明人： Gunther Arnold , Gabor Paal , Alfred Wilhelm , Kurt Halfar , Hans Peter Vollmer
CPC分类号： G03C1/685
摘要： A radiation sensitive recording material contains a layer of a layer-forming substance and incorporated therein an organic halogen compound capable of producing hydrogenhalide when struck by high energy radiation, and a chromogenic arylvinyl pyran or arylvinylthio pyran which changes its color by reaction with hydrolide. The material provides records with high stability.
摘要翻译： 辐射敏感记录材料含有层形成物质层，并且其中掺入能够通过高能量辐射而产生氢卤化物的有机卤素化合物，以及通过与氢化物反应而改变其颜色的显色芳基乙烯基吡喃或芳基乙烯基硫代吡喃。 该材料提供高稳定性的记录。
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公开(公告)号：US4104067A
公开(公告)日：1978-08-01
申请号：US543273
申请日：1975-01-23
申请人： Werner Krafft , Gunther Arnold , Gabor Paal , Hans-Peter Vollmer
发明人： Werner Krafft , Gunther Arnold , Gabor Paal , Hans-Peter Vollmer
CPC分类号： G03C1/73 , G03C1/685 , Y10T428/2395 , Y10T428/2891 , Y10T428/31797 , Y10T428/31855 , Y10T428/31906 , Y10T428/31935
摘要： Copolymers of methylacrylate/alkyl acrylate or methyl methacrylate/alkyl methacrylate are used as a binder for UV-sensitive recording materials, preferably recording materials which contain substances which are capable of discoloration.
摘要翻译： 丙烯酸甲酯/丙烯酸烷基酯或甲基丙烯酸甲酯/甲基丙烯酸烷基酯的共聚物用作UV敏感记录材料的粘合剂，优选含有能够变色的物质的记录材料。
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