Semiconductor laser structure including quantum dot

Details Semiconductor laser structure including quantum dot Semiconductor laser structure including quantum dot

2006-11-09

2009-10-20

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular resonant cavity

Distributed feedback

C372S043010, C372S099000, C372S102000

Reexamination Certificate

active

07606284

ABSTRACT:
Provided is a distributed feedback semiconductor laser structure including: a first clad layer; a first ridge waveguide formed on the first clad layer; an active layer formed on the first ridge waveguide; a second ridge waveguide formed on the active layer; a second clad layer formed on the second ridge waveguide; an ohmic contact layer formed on the second clad layer; and a plurality of gratings formed in at least one of the first and second clad layers, making a predetermined angle with the first ridge waveguide or the second ridge waveguide, and periodically arranged in a longitudinal direction of the first or second ridge waveguide. As a result, a general hologram lithography process capable of mass production is applied to the present invention so that process time can be reduced. Also, a distributed feedback semiconductor laser structure using a quantum-dot active layer that does not require an additional process for obtaining a pure single-wavelength is provided.

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