title: Imaging of broadband terahertz beams using an array of antenna-coupled microbolometers operating at room temperature.
abstract: We present results of 2D real-time imaging of terahertz (THz) beam generated by a photoconductive antenna driven by a femtosecond oscillator. The detector, operating at room temperature, is a 320 x 240 array of antenna-coupled microbolometers with integrated CMOS read-out electronics delivering 25 images per second. High quality images of broadband THz beams covering the 0.1-2 THz range are recorded while maintaining a signal-to-noise ratio of 10 for detected THz power as low as 25 nW. The compactness of the easy-to-use uncooled camera makes it very useful for the alignment of systems such as THz time-domain spectrometers and for the characterization of emitters, optics and other components.
authors.affiliation: IMEP-LAHC, UMR-CNRS 5130, University of Savoie, 73376 Le Bourget du Lac Cedex, France.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Oden
authors.forename: Jérome
authors.initials: J
authors.lastname: Meilhan
authors.forename: Jérémy
authors.initials: J
authors.lastname: Lalanne-Dera
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Roux
authors.forename: Frédéric
authors.initials: F
authors.lastname: Garet
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Coutaz
authors.forename: François
authors.initials: F
authors.lastname: Simoens
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008904:Miniaturization; D011874:Radiometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013696:Temperature; D055069:Terahertz Imaging / Q000295:instrumentation*; D055053:Terahertz Radiation