Coherent light generators – Particular active media – Semiconductor
Patent
1994-10-14
1997-02-18
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 44, 257 88, H01S 318
Patent
active
056047614
ABSTRACT:
A semiconductor laser having a plurality of semiconductor laser chips laminated by solder layers which cause no interference with laser beams is provided. To this end, each of the semiconductor laser chips has a solder sump recess formed in the surface to be soldered at an end adjacent to a laser beam radiating surface and extending through portions of the chip except an active layer. This semiconductor laser is manufactured by a method comprising the steps of forming grooves in a surface of an epitaxial substrate along boundaries of semiconductor laser chip areas for defining laser beam radiating surfaces, each of the grooves extending through portions constituting the substrate except an active layer and having a bottom substantially parallel to the epitaxial substrate surface; cleaving the epitaxial substrate along the grooves to provide the semiconductor laser chips with laser beam radiating surfaces defined by the cleaved surfaces; and laminating the plurality of semiconductor laser chips one above another by soldering.
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Kano Hiroyuki
Nakano Jiro
Ohnishi Toyokazu
Seki Akinori
Sugiyama Takahide
Bovernick Rodney B.
Sang Yisun
Toyota Jidosha & Kabushiki Kaisha
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