Coherent light generators – Particular active media – Semiconductor
Patent
1993-03-29
1994-11-08
Epps, Georgia Y.
Coherent light generators
Particular active media
Semiconductor
372 96, 372 99, 372 46, H01S 319
Patent
active
053633938
ABSTRACT:
A surface emitting semiconductor laser of a laminated structure having at least a light emitting active layer sandwiched between a dielectric film multi-layer mirror and a p-type semiconductor multi-layer mirror on a semiconductor substrate. The energy .DELTA.Ec of conduction band discontinuity is higher than the energy .DELTA.Ev of valence band discontinuity between at least two kinds of semiconductor layers with different refractive indices constituting the p-type semiconductor multi-layer mirror. On the other hand, the energy .DELTA.Ev of valence band discontinuity is higher than the energy .DELTA.Ec of conduction band discontinuity between at least two kinds of semiconductor layers with different refractive indices constituting the n-type semiconductor multi-layer mirror.
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Sagawa Misuzu
Takai Atsushi
Uomi Kazuhisa
Epps Georgia Y.
Hitachi , Ltd.
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