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A Design Consideration of Gain-Switching Semiconductor Lasers

Yoshinori NOMURA, Toshiro ISU, Seiji OCHI

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Summary :

We propose a novel InGaAsP semiconductor laser which theoretically exhibits a high differential gain. The proposed semiconductor laser contains an asymmetric double quantum well structure as the active region. The differential gain enhancement invokes resonant tunneling of heavy holes in the asymmetric double quantum well structure, which takes place on the way of carrier injection process. The proposed laser is expected to be far more efficient in reducing pulse width and spectral broadening (chirping) than conventional multiquantum well lasers when driven by the gain switching method.

Publication
IEICE TRANSACTIONS on Electronics Vol.E81-C No.2 pp.160-165
Publication Date
1998/02/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Ultrashort Optical Pulse Technologies and their Applications)
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