Femtosecond demodulation source for high-resolution submillimeter spectroscopy

Journal Article

A new continuously tunable submillimeter source for spectroscopy and other high-resolution applications has been developed. In this source the optical spectrum of a mode-locked femtosecond laser is downconverted into the submillimeter region by the demodulation process of a photoconductive switch. The power generated is subsequently radiated into free space by an antenna which is integrated along with the switch on low-temperature grown GaAs. The very high resolution is ultimately traceable to the cavity length of the laser and the stable mode-lock frequency which results. Among the most important attributes of the sources are straightforward absolute frequency calibration, very high spectral purity, and the potential for spectral multiplexing. © 1995 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Goyette, TM; Guo, W; De Lucia, FC; Swartz, JC; Everitt, HO; Guenther, BD; Brown, ER

Published Date

  • December 1, 1995

Published In

Volume / Issue

  • 67 /

Start / End Page

  • 3810 -

International Standard Serial Number (ISSN)

  • 0003-6951

Digital Object Identifier (DOI)

  • 10.1063/1.115391

Citation Source

  • Scopus