NDLI: Comparative analysis of different techniques for controlling ratchet effect in a periodic array of asymmetric antidots

Content Provider	IEEE Xplore Digital Library
Author	Medhat, D. Takacs, A. Aubert, H. Portal, J.C.
Copyright Year	2009
Description	Author affiliation: LAAS-CNRS, 7, avenue du Colonel Roche, F-31077 Toulouse, France (Medhat, D.; Takacs, A.; Aubert, H.) \|\| University of Toulouse, UPS, CNRS-LNCMI-INSA, INP, ISAE; F-31077, France (Portal, J.C.)
Abstract	We report a performance comparison between different techniques for enhancing and controlling the ratchet effect recently observed in arrays of asymetric antidots . Under microwave linear polarized radiation, the effect was observed in a high mobility two dimensional electron gas based on AlGaAs/GaAs heterojunction, with periodic array of artificial semi-discs shaped antidots. The uniformity of the incident electric field polarization, the uniformity of the incident power density, as well as the amount of the incident power flow across the surface of the semiconductor sample are the important parameters for choosing the suitable millimeter-wave illumination technique. Several techniques based on the use of horn antenna, dielectric lens or planar dielectric multilayer structures are analyzed in this communication. A comparative study based on full wave electromagnetic simulation allows us to identify the most suitable techniques for improving the original setup used for ratchet experiments. To our knowledge, this opens new possibilities of high frequency detectors based on ratchet effect in the millimeter and sub-millimeter wave region.
Starting Page	1711
Ending Page	1714
File Size	1050585
Page Count	4
File Format	PDF
ISBN	9781424428014
DOI	10.1109/APMC.2009.5384288
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-07
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarization Dielectrics Electron mobility Gallium arsenide Heterojunctions Microwave antenna arrays Load flow Millimeter wave communication Millimeter wave technology Lighting ratchet effect Asymmetric antidots electric field polarization electromagnetic simulations sub-millimeter wave applications
Content Type	Text
Resource Type	Article

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