Coherent light generators – Particular active media – Semiconductor
Patent
1998-12-15
1999-12-28
Healy, Brian
Coherent light generators
Particular active media
Semiconductor
372 43, 372 45, H01S 319
Patent
active
060091134
ABSTRACT:
A semiconductor laser device having high performance, low operating voltage, and long service life, and a method for fabricating the same are provided. A semiconductor multilayer film including an active layer for use of laser beam oscillation is stacked on a substrate. Then a clad layer composed of p-type AlGaAs doped with a p-type impurity Mg, and a contact layer composed of p-type GaAs doped also with Mg are grown by an LPE growth process, and further a surface layer having a high-resistance portion present in the contact layer and low in carrier concentration is removed. The active layer for use of laser beam oscillation is arranged in a substantially center of an end surface from which the laser beam is emitted.
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Hata Toshio
Ishizumi Takashi
Miyazaki Keisuke
Morimoto Taiji
Ohitsu Yoshinori
Healy Brian
Sharp Kabushiki Kaisha
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