Semiconductor laser device

Details Semiconductor laser device Semiconductor laser device

2006-05-24

2009-11-10

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S098000, C372S099000, C372S103000, C372S108000

Reexamination Certificate

active

07616673

ABSTRACT:
A semiconductor laser device includes a semiconductor laser body including a resonator and having a front end face and a rear end face facing each other, the resonator being located between the front end face and the rear end face. The front end face emits principal laser light. A reflectance control film is disposed on the front end face or the rear end face of the semiconductor laser body and is made up of either an aluminum oxide film or a five-layer film including the aluminum oxide film disposed such that it is the layer in the five-layer film farthest from the front end face or the rear end face. A silicon oxide film is disposed on the aluminum oxide film of the reflectance control film and has a thickness of 20 nm or less.

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