@article{e2ec2b46aaa148e8a5e94ec5e1e6c809,
title = "Chirp in a transistor laser: Franz-Keldysh reduction of the linewidth enhancement",
abstract = "A quantum well (QW) transistor laser with the capability of high current density, a collector current ensuring minimal operational change (beyond laser threshold) in base QW carrier population, a favorable long narrow emitter laser geometry, and built-in base-collector Franz-Keldysh absorption (with IE + IB + IC =0), is measured for chirp-related behavior. A relatively low transistor laser linewidth enhancement factor αe ∼0.7 is obtained despite the resolution limitations of the measurement apparatus.",
author = "G. Walter and A. James and N. Holonyak and M. Feng",
note = "Funding Information: The authors are grateful for the support of DARPA Contract No. HR0011-04-1-0034 (Hyper-Uniform Nano-photonics Technologies, HUNT Center). One of the authors (N.H., Jr.) is grateful for the support of the John Bardeen Chair (Sony) of Electrical and Computer Engineering and Physics, and another author (M.F.) for the support of the Nick Holonyak, Jr. Chair of Electrical and Computer Engineering. The authors wish to thank K. Y. Cheng for his contributions to this project. ",
year = "2007",
doi = "10.1063/1.2709964",
language = "English (US)",
volume = "90",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "9",
}