NDLI: Study of ultrafast devices using near-field optical heterodyning

Content Provider	IEEE Xplore Digital Library
Author	Ali, M.E. Ramesh, K.S. Afzar, T. Fetterman, H.R. Streit, D.C. Han, S.K. Kang, K.Y.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA (Ali, M.E.)
Abstract	Near-field optical heterodyning (NFOH) is a novel technique for the injection of millimeter waves at any arbitrary point of an ultrafast device or circuit with high degree of spatial localization. The technique has the capacity to provide details of the operation of the device being probed, which are inaccessible using conventional means. In essence, the technique involves optical mixing of two lasers in a tiny area of the device using near-field coupling. In this paper, we present the results of more comprehensive measurements, in which we performed a scan across the entire device under test. These results show first, the resolution capabilities of the NFOH technique and second, the kind of details one can obtain about the dynamics of ultrafast devices. Two new categories of devices, namely photoconductive switches and high electron mobility transistors (HEMTs), were tested to illustrate the versatility of the technique.
Starting Page	39
Ending Page	40
File Size	200006
Page Count	2
File Format	PDF
ISBN	078035947X
ISSN	10928081
DOI	10.1109/LEOS.2000.890662
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-11-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical mixing Testing HEMTs MODFETs Millimeter wave circuits Millimeter wave technology Millimeter wave transistors Millimeter wave devices Coupling circuits Optical coupling
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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