Coherent light generators – Particular active media – Semiconductor
Patent
1987-09-09
1989-01-24
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
372 46, H01S 319
Patent
active
048005657
ABSTRACT:
Disclosed is a semiconductor laser wherein an interface layer is provided on an upper cladding layer formed on an active layer, the interface layer having a smaller Al mole ratio than that of the upper cladding layer, thereby preventing oxidation of the semiconductor surface which is exposed to the atmosphere, and thus improving the crystallizability of a semiconductor layer which is to be formed subsequently. By setting the refractive index of this semiconductor layer so as to be smaller than that of the upper cladding layer, light can be confined in the active layer at increased efficiency.
Kajimura Takashi
Kawano Toshihiro
Ono Yuichi
Uomi Kazuhisa
Yoshizawa Misuzu
Davie James W.
Hitachi , Ltd.
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