Abstract
Recently, it was shown that transport effects, including both diffusion in the separate confinement (SCH) region and intrinsic capture of carriers into the quantum well (QW), are significant in determining the ultimate modulation bandwidth of QW lasers.1-3 In particular, it was shown that the intrinsic quantum capture process, which has a subpicosecond time scale and, therefore, was considered to be irrelevant to the modulation response, even at 100 GHz, does indeed matter a great deal.3 In this paper we offer a simple physical interpretation of the quantum capture effect and, by inference, predict the ultimate modulation-bandwidth limit of various quantum wire and dot laser structures.
© 1993 Optical Society of America
PDF ArticleMore Like This
Radhakrishnan Nagarajan, Toru Fukushima, Masayuki Ishikawa, John E. Bowers, Randall S. Geels, and Larry A. Coldren
ThB5 Optical Fiber Communication Conference (OFC) 1992
T. C. Wu, S. C. Kan, D. Vassilovski, and K. Y. Lau
ITuG3 Integrated Photonics Research (IPR) 1993
Radhakrishnan Nagarajan
A3 Ultrafast Electronics and Optoelectronics (UEO) 1993