Title :
Heterodyne Detection of Intracavity Generated Terahertz Radiation
Author :
Scheller, Maik ; Young, Abram G. ; Yarborough, Joe M. ; Moloney, Jerome V. ; Koch, Stephan W. ; D´Aubigny, Christian Y Drouet ; Walker, Christopher K.
Author_Institution :
Desert Beam Technol., LLC, Tucson, AZ, USA
fDate :
5/1/2012 12:00:00 AM
Abstract :
Heterodyne detection is used to characterize the terahertz (THz) emission of a novel room-temperature continuous wave source based on difference frequency generation within the cavity of a dual-color vertical external cavity surface emitting laser. Employing the high intracavity intensities allows for the generation of mW powers in a wide frequency range within the terahertz spectrum. Experimental results of heterodyne detection are presented for the emission frequencies of 820 GHz and 1.9 THz using Schottky and hot electron bolometer mixers. Simultaneous emission of multiple narrow-line THz frequency components is observed.
Keywords :
bolometers; heterodyne detection; laser cavity resonators; optical frequency conversion; surface emitting lasers; terahertz wave generation; Schottky bolometer mixers; THz emission; difference frequency generation; dual color laser; frequency 1.9 THz; frequency 820 GHz; hot electron bolometer mixers; intracavity generated terahertz radiation; room temperature continuous wave source; terahertz radiation heterodyne detection; vertical external cavity surface emitting laser; Cavity resonators; Crystals; Laser beams; Measurement by laser beam; Mixers; Receivers; Vertical cavity surface emitting lasers; Local oscillators; nonlinear optical devices; semiconductor lasers; terahertz (THz);
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2012.2189438
