Long wavelength vertical cavity surface emitting lasers

Coherent light generators – Particular resonant cavity – Distributed feedback

Reexamination Certificate

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C372S045013, C372S046012

Reexamination Certificate

active

06987791

ABSTRACT:
Long-wavelength VCSELs having top DBR mirrors with multiple levels. The individual levels of the DBR are comprised of different materials. The top DBR mirror level(s) forms a pillar structure and/or are defined by trenches. Top contacts are formed on the top DBR mirror below that mirror's top level. An aperture is formed in one of the DBR layers. An ion implanted region is formed in the top DBR and may extend into the active region and into part of a bottom DBR. The top DBRs are beneficially fabricated by etching parts of upper level(s) down to the lower level(s).

REFERENCES:
patent: 5557626 (1996-09-01), Grodzinski et al.
patent: 5995531 (1999-11-01), Gaw et al.
patent: 6185241 (2001-02-01), Sun
patent: 6534331 (2003-03-01), Liao et al.
patent: 6577658 (2003-06-01), Lee et al.
patent: 6618414 (2003-09-01), Wasserbauer et al.

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