Publication detail

Scattering strength dependence of terahertz random lasers

Schoenhuber, S Wenclawiak, M Kainz, MA. Limbacher, B. Andrews, AM. Detz, H. Strasser, G. Darmo, J. Unterrainer, K.

Original Title

Scattering strength dependence of terahertz random lasers

English Title

Scattering strength dependence of terahertz random lasers

Type

journal article in Web of Science

Language

en

Original Abstract

Random lasing operation requires an active region, a gain medium that supports multiple scattering, and, especially for integrated optoelectronic devices, a nonresonant outcoupling mechanism over a continuous spectrum. For broadband operation, the resonator geometry must provide frequency nonselective, strong feedback over a large bandwidth. The feedback mechanism by multiple scattering in terahertz semiconductor random lasers and the bandwidth of such cavities are presented and discussed. We demonstrate the influence of shape and scattering strength of the scatterers on the lasing process and determine the bandwidth of such resonator structures. We use passive resonator structures to prove that the feedback as well as the outcoupling is frequency independent over a large bandwidth.

English abstract

Random lasing operation requires an active region, a gain medium that supports multiple scattering, and, especially for integrated optoelectronic devices, a nonresonant outcoupling mechanism over a continuous spectrum. For broadband operation, the resonator geometry must provide frequency nonselective, strong feedback over a large bandwidth. The feedback mechanism by multiple scattering in terahertz semiconductor random lasers and the bandwidth of such cavities are presented and discussed. We demonstrate the influence of shape and scattering strength of the scatterers on the lasing process and determine the bandwidth of such resonator structures. We use passive resonator structures to prove that the feedback as well as the outcoupling is frequency independent over a large bandwidth.

Keywords

QUANTUM CASCADE LASERS; OPTICAL-TRANSMISSION

Released

21.04.2019

Pages from

151611

Pages to

151611

Pages count

7

URL

Documents

BibTex


@article{BUT159790,
  author="Hermann {Detz}",
  title="Scattering strength dependence of terahertz random lasers",
  annote="Random lasing operation requires an active region, a gain medium that supports multiple scattering, and, especially for integrated optoelectronic devices, a nonresonant outcoupling mechanism over a continuous spectrum. For broadband operation, the resonator geometry must provide frequency nonselective, strong feedback over a large bandwidth. The feedback mechanism by multiple scattering in terahertz semiconductor random lasers and the bandwidth of such cavities are presented and discussed. We demonstrate the influence of shape and scattering strength of the scatterers on the lasing process and determine the bandwidth of such resonator structures. We use passive resonator structures to prove that the feedback as well as the outcoupling is frequency independent over a large bandwidth.",
  chapter="159790",
  doi="10.1063/1.5083699",
  howpublished="print",
  number="15",
  volume="125",
  year="2019",
  month="april",
  pages="151611--151611",
  type="journal article in Web of Science"
}