Coherent light generators – Particular active media – Semiconductor
Patent
1994-03-02
1996-05-21
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 5026, H01S 318
Patent
active
055197213
ABSTRACT:
A multi-quantum well (MQW) structure type semiconductor integrated laser element is constituted by a laser diode section and an optical modulator section which is integrated with the laser diode section and which contains a multi-quantum well structure. The multi-quantum well structure of the optical modulator section is a coupled multi-quantum well structure in which quantum states of the quantum wells are coupled with one another, thereby forming mini-bands. The large amounts of carriers produced by absorption are quickly scattered and lost through the mini-bands thereby enabling the modulation in proportion to the intensity of the electric field for modulation. The MQW integrated semiconductor laser element thus obtained exhibits excellent modulation characteristics and provides high output, and can be fabricated at a low cost with a high production yield.
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Bovernick Rodney B.
McNutt Robert
NEC Corporation
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