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Proceedings Paper

Continuous-wave submillimeter-wave gyrotrons
Author(s): Seong-Tae Han; Robert G. Griffin; Kan-Nian Hu; Chan-Gyu Joo; Colin D. Joye; Ivan Mastovsky; Michael A. Shapiro; Jagadishwar R. Sirigiri; Richard J. Temkin; Antonio C. Torrezan; Paul P. Woskov
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Paper Abstract

Recently, dynamic nuclear polarization enhanced nuclear magnetic resonance (DNP/NMR) has emerged as a powerful technique to obtain significant enhancements in spin spectra from biological samples. For DNP in modern NMR systems, a high power continuous-wave source in the submillimeter wavelength range is necessary. Gyrotrons can deliver tens of watts of CW power at submillimeter wavelengths and are well suited for use in DNP/NMR spectrometers. To date, 140 GHz and 250 GHz gyrotrons are being employed in DNP spectrometer experiments at 200 MHz and 380 MHz at MIT. A 460 GHz gyrotron, which has operated with 8 W of CW output power, will soon be installed in a 700 MHz NMR spectrometer. High power radiation with good spectral and spatial resolution from these gyrotrons should provide NMR spectrometers with high signal enhancement through DNP. Also, these tubes operating at submillimeter wavelengths should have important applications in research in physics, chemistry, biology, materials science and medicine.

Paper Details

Date Published: 12 October 2006
PDF: 8 pages
Proc. SPIE 6373, Terahertz Physics, Devices, and Systems, 63730C (12 October 2006); doi: 10.1117/12.686436
Show Author Affiliations
Seong-Tae Han, Massachusetts Institute of Technology (United States)
Robert G. Griffin, Massachusetts Institute of Technology (United States)
Kan-Nian Hu, Massachusetts Institute of Technology (United States)
Chan-Gyu Joo, Massachusetts Institute of Technology (United States)
Colin D. Joye, Massachusetts Institute of Technology (United States)
Ivan Mastovsky, Massachusetts Institute of Technology (United States)
Michael A. Shapiro, Massachusetts Institute of Technology (United States)
Jagadishwar R. Sirigiri, Massachusetts Institute of Technology (United States)
Richard J. Temkin, Massachusetts Institute of Technology (United States)
Antonio C. Torrezan, Massachusetts Institute of Technology (United States)
Paul P. Woskov, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 6373:
Terahertz Physics, Devices, and Systems
Mehdi Anwar; Anthony J. DeMaria; Michael S. Shur, Editor(s)

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