SINGLE-TRANSVERSE-MODE BIPOLAR CASCADE LASERS WITH THICK QUANTUM WELLS AND NO OPTICAL CONFINEMENT LAYERS

Title Tunable single-mode slot waveguide quantum cascade lasers

Temperature Effect on THz Quantum Cascade Lasers

A simple semi-phenomenological model, which accurately predicts the dependence of thresholdcurrent for temperature of Resonant-phonon three well quantum cascade laser based on verticaltransitions is offered. We found that, the longitude optical phonon scattering of thermally excitedelectrons is the most important limiting factor for thermal performance of high frequency THz QCLs.In low frequenc...

Quantum cascade lasers with an integrated polarization mode converter.

We discuss the design, fabrication and characterization of waveguide polarization mode converters for quantum cascade lasers operating at 4.6 μm. We have fabricated a quantum cascade laser with integrated polarization mode converter that emits light of 69% Transverse Electrical (TE) polarization from one facet and 100% Transverse Magnetic (TM) polarization from the other facet.

Non-equilibrium longitudinal and transverse optical phonons in terahertz quantum cascade lasers

quantum cascade lasers Miriam S. Vitiello, Rita C. Iotti, Fausto Rossi, Lukas Mahler, Alessandro Tredicucci, Harvey E. Beere, David A. Ritchie, Qing Hu, and Gaetano Scamarcio CNR-Istituto di Fotonica e Nanotecnologie UOS Bari and Dipartimento Interateneo di Fisica “M. Merlin,” Università degli Studi di Bari, Via Amendola 173, 70126 Bari, Italy Dipartimento di Scienza Applicata e Tecnologia, Pol...

Coherent Coupling of Multiple Transverse Modes in Quantum Cascade Lasers

Nanfang Yu, Laurent Diehl, Ertugrul Cubukcu, David Bour, Scott Corzine, Gloria Höfler, Aleksander K. Wojcik, Kenneth B. Crozier, Alexey Belyanin,* and Federico Capasso* School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA Agilent Laboratories, 3500 Deer Creek Road, Palo Alto, California 94304, USA Department of Physics, Texas A&M University, Colleg...