Gain-switching characteristics and fast transient response of three-terminal size-effect modulation laser

Gain-switching characteristics of the proposed size-effect modulation light sources are investigated. For realizing the laser operation, the consideration of the screening effect on the applied electric fields due to the high concentration of carriers is indispensable. In this respect, we propose a...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1986-09, Vol.22 (9), p.1900-1908
Main Authors: Suemune, I., Takeoka, T., Yamanishi, M., Yong Lee
Format: Article
Language:English
Subjects:
Applied sciences
Charge carrier processes
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gallium arsenide
Lasers
Light sources
Optical fiber communication
Optical modulation
Optics
Other techniques and industries
Physics
Pulse modulation
Quantum well lasers
Semiconductor lasers
Semiconductor lasers
laser diodes
Stimulated emission
Transient response
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Summary:Gain-switching characteristics of the proposed size-effect modulation light sources are investigated. For realizing the laser operation, the consideration of the screening effect on the applied electric fields due to the high concentration of carriers is indispensable. In this respect, we propose a separate-confinement-hetero-multiple-quantum-well (SCH-MQW) structure as the most suitable one for gain switching. The key point of the structure is the sufficiently high heterobarriers at the clad-barrier interfaces to prevent carrier leakage. The examinations of the transient response clarify that they are principally photon-lifetime limited. Employing the three-terminal character of the proposed laser, the fast pulse modulation up to 12 Gbits/s, which is almost free from the relaxation oscillations and the pattern effects, is predicted.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1986.1073150