Nitride based semiconductor laser diode device with a bar mask

Coherent light generators – Particular active media – Semiconductor

Reexamination Certificate

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C372S050100, C372S054000

Reexamination Certificate

active

07126972

ABSTRACT:
A nitride based semiconductor laser diode device comprising a selective growth mask with a grating structure is proposed. The island-like stacked epitaxial layers including the P-type cladding layer is formed from the selective growth mask upon the active layer of the semiconductor laser structure. This proposed structure can reduce the strain by the deformation due to the isolate structure. Thus, increase of thickness of the cladding layer and/or increase of composition difference can be achieved without crack existing in the island-like stacked epitaxial layers. The optical confinement can be effectively improved.

REFERENCES:
patent: 6711197 (2004-03-01), Tojo et al.
patent: 2004/0094773 (2004-05-01), Kiyoku et al.
patent: 2002-094169 (2002-03-01), None

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