title: Low divergence Terahertz photonic-wire laser.
abstract: Edge emitting, terahertz quantum cascade photonic-wire lasers, based on a third order Bragg grating are presented. Devices with a power consumption as low as 300mW, with a single frequency output power of more than 1.5mW are demonstrated. Their maximum operating temperature in continuous-wave mode operation is 110K and the emission is concentrated in a narrow beam (~30 degrees divergence). Larger structure based on the same design show more than 10mW output power and more than 200mW/A slope efficiency at 10K continuous-wave operation.
authors.affiliation: ETH Zurich, Institute for Quantum Electronics, Wolfgang-Pauli-Strasse 16, 8093 Zürich, Switzerland. amanti@phys.ethz.ch
authors.forename: Maria I
authors.initials: MI
authors.lastname: Amanti
authors.forename: Giacomo
authors.initials: G
authors.lastname: Scalari
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Castellano
authors.forename: Mattias
authors.initials: M
authors.lastname: Beck
authors.forename: Jerome
authors.initials: J
authors.lastname: Faist
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D017785:Photons; D055053:Terahertz Radiation