Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2008-01-08
2008-01-08
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S050100, C372S099000
Reexamination Certificate
active
07317745
ABSTRACT:
The present invention relates to a multi-wavelength laser diode, in which an oscillating structure includes a semiconductor substrate, and a lower cladding layer, an active layer and a ridge formed in their order on the semiconductor substrate. A first metal layer is formed on a first face of the oscillating structure including one end of the ridge, and made of a metal having a high reflectivity in a first wavelength range of at least a predetermined wavelength. A second metal layer is formed on the first metal layer, the second metal layer being made of a metal having a high reflectivity in a second wavelength range under the predetermined wavelength. The multi-wavelength laser diode can improve-the reflective layer structure to achieve a high reflectivity in the entire visible light range.
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Japanese Patent Office, Office Action mailed Jul. 25, 2006 and English Translation.
Cho Sang Deog
Choi Hee Seok
Jang Tae Sung
Jeon Dong Min
Lowe Hauptman Ham & Berner
Rodriguez Armando
Samsung Electro-Mechanics Co. Ltd.
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