Open AccessLow divergence Terahertz photonic-wire laser
Author(s) -
Maria I. Amanti,
Giacomo Scalari,
Fabrizio Castellano,
Mattias Beck,
Jérôme Faist
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.006390
Subject(s) - terahertz radiation , optics , materials science , beam divergence , optoelectronics , photonics , laser , continuous wave , fiber bragg grating , semiconductor laser theory , grating , cascade , photomixing , laser beam quality , far infrared laser , physics , laser beams , terahertz metamaterials , chemistry , chromatography
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.