Since their initial demonstration, random lasers have attracted a lot of interest due to their complementary characteristics compared to conventional lasers [1]. In a random laser, the light is trapped by multiple scattering in the gain medium, which has been demonstrated in different kinds of materials, ranging from grinded laser crystals to polymer films and ceramics. Recently we demonstrated [2] random lasers at terahertz (THz) frequencies by making use of quantum cascade laser (QCL) active regions, resulting in broadband surface emission with a highly collimated output beam.

© 2019 IEEE

PDF Article
More Like This
A Broadband Polarization-Rotating Vivaldi Antenna for Beam Focusing of Terahertz Quantum Cascade Lasers

U. Senica, E. Mavrona, T. Olariu, A. Forrer, M. Beck, J. Faist, and G. Scalari
cc_2_4 The European Conference on Lasers and Electro-Optics (CLEO_Europe) 2019

Modeling Self-Starting Harmonic Mode Locking in Terahertz Quantum Cascade Lasers

Michael Riesch, Valentino Pistore, Feihu Wang, Sukhdeep Dhillon, and Christian Jirauschek
cc_2_5 The European Conference on Lasers and Electro-Optics (CLEO_Europe) 2019

Frequency-Tunable External Cavity Terahertz Quantum Cascade Laser

Alan W. M. Lee, Qi Qin, Sushil Kumar, Qing Hu, and John L Reno
CThH5 Conference on Lasers and Electro-Optics (CLEO) 2009


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription