发明名称 |
Semiconductor laser and a manufacturing method for the same |
摘要 |
<p>A semiconductor laser (LS1), including: an n-type cladding layer (3) that has n-type conductivity; an active layer (4) formed on top of the n-type cladding layer; a p-type cladding base layer (5) that is formed on top of the active layer (4) and has p-type conductivity; a current-blocking layer (13) that is formed on specified parts of an upper surface of the p-type cladding base layer (5) and substantially has n-type conductivity; and a p-type buried cladding layer (7) that has p-type conductivity and is formed so as to cover the current-blocking layer (13) and contact remaining parts of the upper surface of the p-type cladding base layer (5). The current-blocking layer (13) has at least two regions (13a,13b) having different concentrations (hereafter "N1" and "N2" where N1<N2) of n-type carriers, a region adjacent to an interface between the p-type cladding base layer (5) and the p-type buried cladding layer (7) having the N1 concentration of n-type carriers and a part or all of a remaining region of the current-blocking layer region (13) having the N2 concentration. <IMAGE></p> |
申请公布号 |
EP1033796(A2) |
申请公布日期 |
2000.09.06 |
申请号 |
EP20000301629 |
申请日期 |
2000.02.29 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUKUHISA, TOSHIYA;MANNO, MASAYA;YOSHIKAWA, AKIO |
分类号 |
G11B7/125;H01S5/00;H01S5/22;H01S5/223;(IPC1-7):H01S5/32;H01L33/00 |
主分类号 |
G11B7/125 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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