Common-emitter and common-base small-signal operation of the transistor laser

TitleCommon-emitter and common-base small-signal operation of the transistor laser
Publication TypeJournal Article
Year of Publication2008
AuthorsFaraji, B., W. Shi, D. L. Pulfrey, and L. Chrostowski
JournalApplied Physics Letters
Volume93
Pagination143503 -143503-3
Date Publishedoct.
ISSN0003-6951
Keywordsfrequency modulation, Lasers, optical modulation, transistors
Abstract

We derive analytic expressions for the transistor laser in the common-emitter and common-base configuration and compare the performance of the transistor in these two modes of operation. We show that the common-base operation results in a wide-band, small-signal modulation response. This effect is due to reduced carrier lifetime in the base. The bandwidth equalization and the suppression of the relaxation oscillation frequency are shown. A bandwidth of 48 GHz is predicted for a vertical cavity laser biased at 10Ith.

URLhttp://dx.doi.org/10.1063/1.2998267
DOI10.1063/1.2998267

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