High SMSR unidirectional etched lasers and low...

Details High SMSR unidirectional etched lasers and low... High SMSR unidirectional etched lasers and low...

2004-03-18

2010-10-19

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular resonant cavity

Folded cavity

C372S094000, C372S098000

Reexamination Certificate

active

07817702

ABSTRACT:
Unidirectionality of lasers is enhanced by forming one or more etched gaps (78, 80) in the laser cavity. The gaps may be provided in any segment of a laser, such as any leg of a ring laser, or in one leg (62) of a V-shaped laser (60). A Brewster angle facet at the distal end of a photonic device coupled to the laser reduces back-reflection into the laser cavity. A distributed Bragg reflector is used at the output of a laser to enhance the side-mode suppression ratio of the laser.

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