NDLI: Exploring novel terahertz detectors and sources with the UCSB free-electron lasers.

Content Provider	IEEE Xplore Digital Library
Author	Allen, S.J. Aizin, G.R. Bowers, J. Crossno, J.D. Dyer, G.C. Mars, D. Mikalopas, J. Reno, J.L. Robrish, P. Shaner, E.A. Trutna, R. Wanke, M.C. Zeng, G.
Copyright Year	2008
Description	Author affiliation: UC Santa Barbara, Santa Barbara, CA (Allen, S.J.; Bowers, J.; Crossno, J.D.; Dyer, G.C.; Zeng, G.) \|\| CUNY, New York, NY (Aizin, G.R.; Mikalopas, J.) \|\| Agilent Labs., Santa Clara, CA (Mars, D.; Robrish, P.; Trutna, R.) \|\| Sandia Nat. Labs., Albuquerque, NM (Reno, J.L.; Shaner, E.A.; Wanke, M.C.)
Abstract	Summary form only given. The UCSB free-electron lasers energize two research thrusts - terahertz resonant detectors, and terahertz Bloch oscillators. Work on terahertz resonant detectors focuses on plasmonic resonances in grating gated field effect transistors. The resonant response, ~ 50 GHz wide, can be tuned with gate voltage and grating geometry. Gating a narrow region of the channel to threshold enhances reponsivity. The pinched off region develops a barrier to electron flow and "Schottky like" characteristics, exhibiting strong bolometric or rectified response with time constants varying from submicroseconds to 10's of microseconds. Efforts to make a Bloch oscillator oscillate use super- superlattices comprised of short period superlattices interleaved by heavily doped n+ regions. Room temperature terahertz photon assisted transport, excited by the radiation from the FEL's, supports the notion that the super-superlattice structure supports uniform Stark ladders when subjected to sufficiently strong electric fields to bring matwerialthe super- superlattice into the Bloch oscillator limit. Current work fabricates metal clad ring resonators and pulse excites them with ~ microsecond long pulses or -microsecond long bursts of intense 9GHz radiation.
Starting Page	1
Ending Page	2
File Size	62583
Page Count	2
File Format	PDF
ISBN	9781424421190
DOI	10.1109/ICIMW.2008.4665706
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Oscillators Superlattices USA Councils Logic gates Laboratories Free electron lasers
Content Type	Text
Resource Type	Article

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