Share Email Print
cover

Proceedings Paper

A micro-fabricated sheet-beam Orotron THz source
Author(s): S. J. Papadakis; J. A. Hoffmann; A. H. Monica; D. Deglau; J. Yu; T. Antonsen; G. Nusinovich; R. Osiander
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We describe the fabrication of an Orotron driven by a sheet beam of electrons. The sheet beam is generated by a carbon nanotube field emission electron gun, which is less than 2 mm in total thickness. The orotron cavity is 2 cm long and 1 cm wide, and houses a microfabricated Smith-Purcell grating which generates the THz radiation. The sheet beam is 5 μm thick and 6 mm wide, and it travels within 15 μm of the top surface of the Smith-Purcell grating for the length of the cavity. The Orotron is discretely tunable, which means that there are a number of cavity resonances that can be driven by changing the energy of the beam such that for the period of the Smith-Purcell grating the cavity is driven on one of the resonances. For this work, a target frequency of 0.5 THz, corresponding to a beam energy of 3 keV, was used.

Paper Details

Date Published: 13 May 2011
PDF: 9 pages
Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80310C (13 May 2011); doi: 10.1117/12.884158
Show Author Affiliations
S. J. Papadakis, The Johns Hopkins Univ. Applied Physics Lab. (United States)
J. A. Hoffmann, The Johns Hopkins Univ. Applied Physics Lab. (United States)
A. H. Monica, The Johns Hopkins Univ. Applied Physics Lab. (United States)
D. Deglau, The Johns Hopkins Univ. Applied Physics Lab. (United States)
J. Yu, Univ. of Maryland, College Park (United States)
T. Antonsen, Univ. of Maryland, College Park (United States)
G. Nusinovich, Univ. of Maryland, College Park (United States)
R. Osiander, The Johns Hopkins Univ. Applied Physics Lab. (United States)


Published in SPIE Proceedings Vol. 8031:
Micro- and Nanotechnology Sensors, Systems, and Applications III
Thomas George; M. Saif Islam; Achyut K. Dutta, Editor(s)

© SPIE. Terms of Use
Back to Top