title: The linewidth enhancement factor alpha of quantum dot semiconductor lasers.
abstract: We show that the various techniques commonly used to measure the linewidth enhancement factor can lead to different values when applied to quantum dot semiconductor lasers. Such behaviour is a direct consequence of the intrinsic capture/escape dynamics of quantum dot materials and of the free carrier plasma effects. This provides an explanation for the wide range of values experimentally measured and the linewidth re-broadening recently measured.
authors.forename: Sergey
authors.initials: S
authors.lastname: Melnik
authors.forename: Guillaume
authors.initials: G
authors.lastname: Huyet
authors.forename: Alexander
authors.initials: A
authors.lastname: Uskov