Distributed feedback semiconductor laser device

Details Distributed feedback semiconductor laser device Distributed feedback semiconductor laser device

2006-02-21

2006-02-21

Menefee, James (Department: 2828)

Coherent light generators

Particular resonant cavity

Distributed feedback

C372S046010, C372S046015

Reexamination Certificate

active

07003013

ABSTRACT:
A DFB semiconductor laser device including an n-type semiconductor substrate and a layer structure, overlying the semiconductor substrate, including an active layer, a compound semiconductor layer constituting a diffraction grating and overlying the active layer, and an embedding layer embedding the diffraction grating, wherein said at least one of the compound semiconductor layer and the embedding layer has a carrier density of 7×1017to 2×1018cm−3.

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patent: 5821570 (1998-10-01), Kazmierski et al.
patent: 6674784 (2004-01-01), Takiguchi et al.

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