Broadband Spectro-Spatial Characterization Of CW Terahertz Photoemitter Using CMOS CameraPoster (OPTO-P2)
Thu, 12 Nov 2020 01:15am to 03:00am
Decoupling the desired spectral signal from scattering events and also from the sporadic signals from the
background has been a challenge for real-time applications exhibited by the present broadband terahertz devices. Performing imaging in conjunction with spectroscopy will circumvent this issue, thereby improving the accuracy of the measurement. In this work, the spatial profiles of a widely used CW antenna coupled terahertz photomixer are experimentally investigated using a well-calibrated 32Ãƒf-32 pixel CMOS terahertz camera in a broad frequency range from 0.2-0.95 THz. The frequency dependent emission of the THz photomixer exhibited asymmetric and annular beam profiles with intense side lobes.
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Authors: Jagtap, Vishal; Zatta, Robin; Nellen, Simon; Globisch, Bjoern; Grzyb, Janusz; Pfeiffer, Ullrich
Fraunhofer Heinrich Hertz Institute HHI, Institute for High-frequency and Communications Technology, University of Wuppertal, Institute of Solid State Physics, Technical University Berlin