title: Two-color multi-section quantum dot distributed feedback laser.
abstract: A dual-wavelength emission source is realized by asymmetrically pumping a two-section quantum-dot distributed feedback laser. It is found that under asymmetric bias conditions, the powers between the ground-state and excited-state modes of the two-section device can be equalized, which is mainly attributed to the unique carrier dynamics of the quantum-dot gain medium. As a result, a two-color emission with an 8-THz frequency difference is realized that has potential as a compact THz source. It is also shown that the combination of significant inhomogeneous broadening and excited-state coupled mode operation allows the manipulation of the quantum-dot states through external optical stabilization.
authors.affiliation: Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA. nader@unm.edu
authors.forename: Nader A
authors.initials: NA
authors.lastname: Naderi
authors.forename: Frédéric
authors.initials: F
authors.lastname: Grillot
authors.forename: Kai
authors.initials: K
authors.lastname: Yang
authors.forename: Jeremy B
authors.initials: JB
authors.lastname: Wright
authors.forename: Aaron
authors.initials: A
authors.lastname: Gin
authors.forename: Luke F
authors.initials: LF
authors.lastname: Lester
mesh_terms: D003116:Color; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D007834:Lasers; D045663:Quantum Dots