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Updated: Jun 8, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Directional control of infrared antenna-coupled tunnel diodes
Brian A Slovick1, Jeffrey A Bean, Peter M Krenz
1University of Central Florida, CREOL – The College of Optics and Photonics, 4000 Central Florida Blvd., Orlando, Florida 32816, USA. bslovick@creol.ucf.edu
Abstract:
Directional control of received infrared radiation is demonstrated with a phased-array antenna connected by a coplanar strip transmission line to a metal-oxide-metal (MOM) tunnel diode. We implement a MOM diode to ensure that the measured response originates from the interference of infrared antenna currents at specific locations in the array. The reception angle of the antenna is altered by shifting the diode position along the transmission line connecting the antenna elements. By fabricating the devices on a quarter wave dielectric layer above a ground plane, narrow beam widths of 35° FWHM in power and reception angles of ± 50° are achieved with minimal side lobe contributions. Measured radiation patterns at 10.6 μm are substantiated by electromagnetic simulations as well as an analytic interference model.
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