Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2009-04-30
2011-10-11
Pham, Hai (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C372S044011, C372S050110
Reexamination Certificate
active
08035676
ABSTRACT:
In a surface emitting laser element, on a substrate whose normal direction of a principal surface is inclined, a resonator structural body including an active layer, and a lower semiconductor DBR and an upper semiconductor DBR sandwiching the resonator structural body are stacked. A shape of a current passing through region in an oxide confinement structure of the upper semiconductor DBR is symmetrical to an axis passing through a center of the current passing through region parallel to an X axis and symmetrical to an axis passing through the center of the current passing through region parallel to a Y axis, and a length of the current passing through region is greater in the Y axis direction than in the X axis direction. A thickness of an oxidized layer surrounding the current passing through region is greater in the −Y direction than in the +X and −X directions.
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Jan. 11, 2011 European search report in connection with counterpart European patent application No. 09 25 1292.
Harasaka Kazuhiro
Ishii Toshihiro
Jikutani Naoto
Sato Shun'ichi
Cooper & Dunham LLP
Pham Hai
Ricoh & Company, Ltd.
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