发明名称 |
SEMICONDUCTOR LASER ELEMENT HAVING A DIVERGING REGION |
摘要 |
A semiconductor ridge laser for coupling to a single-mode optical fiber has a ridge with a narrow parallel region, a diverging region, and then a wide parallel region that is adjacent to an output facet. A pump region for the laser may be less than the entire area of the ridge and have a "T" shape. Preferably, the ridge has a depth of about 350 to 550 nm and the narrow parallel region has a length of more than 0.4 times the overall length of the ridge. The wide parallel region at the output enables the laser to obtain low thermal resistance, which leads to a low operating temperature, a low power density in the laser cavity, and low astigmatism. |
申请公布号 |
EP1243055(B1) |
申请公布日期 |
2004.10.13 |
申请号 |
EP20000990008 |
申请日期 |
2000.12.20 |
申请人 |
CORNING O.T.I. S.R.L |
发明人 |
BALSAMO, STEFANO;GHISLOTTI, GIORGIO;MORASCA, SALVATORE;TREZZI, FIORENZO |
分类号 |
H01S5/22;H01S5/042;H01S5/10;H01S5/20 |
主分类号 |
H01S5/22 |
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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