Surface light emitting type semiconductor laser having a...

Details Surface light emitting type semiconductor laser having a... Surface light emitting type semiconductor laser having a...

2005-02-15

2005-02-15

Wong, Don (Department: 2821)

Coherent light generators

Particular active media

Semiconductor

C372S044010, C372S045013, C372S046012

Reexamination Certificate

active

06856635

ABSTRACT:
A lower multilayer reflection film (2), a light emitting layer forming portion (6) and an upper multilayer reflection film (8) are sequentially formed on a substrate (1) to form a semiconductor laminated portion (9), and a current injection region A is formed at a part of the semiconductor laminated portion so as to emit light from the surface in the center thereof. And, according to the present invention, the current injection region A is formed so as to be deflected from a center of the substrate. As a result, there is provided a surface light emitting type semiconductor laser capable of monitoring a light emitting power correctly and controlling it automatically in order to achieve the constant light emitting power in a case where the surface light emitting type laser chip is used as a light source for a pickup or the like.

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