title: Small-signal modulation characteristics of a polariton laser.
abstract: Use of large bandgap materials together with electrical injection makes the polariton laser an attractive low-power coherent light source for medical and biomedical applications or short distance plastic fiber communication at short wavelengths (violet and ultra-violet), where a conventional laser is difficult to realize. The dynamic properties of a polariton laser have not been investigated experimentally. We have measured, for the first time, the small signal modulation characteristics of a GaN-based electrically pumped polariton laser operating at room temperature. A maximum -3 dB modulation bandwidth of 1.18 GHz is measured. The experimental results have been analyzed with a theoretical model based on the Boltzmann kinetic equations and the agreement is very good. We have also investigated frequency chirping during such modulation. Gain compression phenomenon in a polariton laser is interpreted and a value is obtained for the gain compression factor.
authors.affiliation: Center for Photonics and Multiscale Nanomaterials, Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, USA.
authors.forename: Md Zunaid
authors.initials: MZ
authors.lastname: Baten
authors.affiliation: Center for Photonics and Multiscale Nanomaterials, Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, USA.
authors.forename: Thomas
authors.initials: T
authors.lastname: Frost
authors.affiliation: National Research University for Information Technology, Mechanics and Optics (ITMO), St. Petersburg 197101, Russia.
authors.forename: Ivan
authors.initials: I
authors.lastname: Iorsh
authors.affiliation: Center for Photonics and Multiscale Nanomaterials, Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, USA.
authors.forename: Saniya
authors.initials: S
authors.lastname: Deshpande
authors.affiliation: 1] Russian Quantum Center, Novaya 100, 143025 Skolkovo, Moscow Region, Russia [2] School of Physics and Astronomy, University of Southampton, SO17 1NJ Southampton, United Kingdom.
authors.forename: Alexey
authors.initials: A
authors.lastname: Kavokin
authors.affiliation: Center for Photonics and Multiscale Nanomaterials, Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, USA.
authors.forename: Pallab
authors.initials: P
authors.lastname: Bhattacharya