Gain and losses in THz quantum cascade laser with metal-metal waveguide

• Published in: Optics express Vol. 19; no. 2; pp. 733 - 738
• Main Authors: Martl, Michael, Darmo, Juraj, Deutsch, Christoph, Brandstetter, Martin, Andrews, Aaron Maxwell, Klang, Pavel, Strasser, Gottfried, Unterrainer, Karl
• Format: Journal Article
• Language: English
• Published: United States 17.01.2011
• Subjects: Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Lasers; Metals - chemistry; Refractometry - instrumentation; Terahertz Radiation; Transducers

Coupling of broadband terahertz pulses into metal-metal terahertz quantum cascade lasers is presented. Mode matched terahertz transients are generated on the quantum cascade laser facet of subwavelength dimension. This method provides a full overlap of optical mode and active laser medium. A longitu...