Xi'an Institute of Optics and Precision Mechanics,CAS
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其他题名 | - |
MUSHIGAMI MASAHITO; TANAKA HARUO; SAKYAMA HAJIME | |
1993-10-08 | |
专利权人 | ROHM KK |
公开日期 | 1993-10-08 |
授权国家 | 日本 |
专利类型 | 授权发明 |
摘要 | PURPOSE:To avoid a reduction in the characteristics of a semiconductor laser by a method wherein a dopant is diffused from a second upper clad layer into a first upper clad layer and the carrier concentration in the interface part between these layers is made high to reduce a series resistance in an annealing process and at the same time, a second evaporation preventive layer is formed before the annealing process to stop the evaporation of other layers. CONSTITUTION:An N-type AlxGa1-xAs (x=0.6) lower clad layer 3, an AlxGa1-xAs (x=0.15) active layer 4, a P-type AlxGa1-xAs (X=0.6) first upper clad layer 5, an N-type GaAs photo absorption layer 6 and an N-type AlxGa1-xAs (x=0.15) evaporation preventive layer 7 are laminated on an N-type GaAs substrate 2. Then, a striped groove 9 to intrude into the layer 6 is bored, an As molecular beam is irradiated on the substrate 2 to evaporate an impurity being adhered on the substrate surface and at the same time, to evaporate part of the layer 6 and the layer 5 is exposed on the base part of the groove 9. After that, a P AlyGa1-yAs second upper clad layer 10 is laminated on the upper part of the layer 5 including this groove 9 while the carrier concentration in the layer 10 is made higher by one order magnitude than that in the layer 5, but at this time, a second evaporation preventive layer 13 is provided to stop the evaporation of other regions. |
其他摘要 | 目的:通过一种方法避免半导体激光器特性的降低,其中掺杂剂从第二上包层扩散到第一上包层中,并且这些层之间的界面部分中的载流子浓度高,以减少a在退火工艺中串联电阻,同时,在退火工艺之前形成第二蒸发防止层,以阻止其它层的蒸发。组成:N型AlxGa1-xAs(x = 0.6)下包层3,AlxGa1-xAs(x = 0.15)有源层4,P型AlxGa1-xAs(X = 0.6)第一上包层5,在N型GaAs衬底2上层叠N型GaAs光吸收层6和N型Al x Ga 1-x As(x = 0.15)蒸发防止层7.然后,侵入层6的条纹槽9是在基板2上照射分子束以蒸发粘附在基板表面上的杂质,同时蒸发层6的一部分,并且层5暴露在凹槽9的基部上。之后,在包括该凹槽9的层5的上部层叠P + AlyGa1-yAs第二上包层10,同时使层10中的载流子浓度比层中的载流子浓度高一个数量级。如图5所示,此时,设置第二蒸发防止层13以阻止其他区域的蒸发。 |
申请日期 | 1989-01-24 |
专利号 | JP1993072116B2 |
专利状态 | 失效 |
申请号 | JP1989014349 |
公开(公告)号 | JP1993072116B2 |
IPC 分类号 | H01S | H01L | H01L21/203 | H01S5/00 | H01S3/18 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/83831 |
专题 | 半导体激光器专利数据库 |
作者单位 | ROHM KK |
推荐引用方式 GB/T 7714 | MUSHIGAMI MASAHITO,TANAKA HARUO,SAKYAMA HAJIME. -. JP1993072116B2[P]. 1993-10-08. |
条目包含的文件 | ||||||
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JP1993072116B2.PDF(426KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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