Multiheterodyne spectroscopy with optical frequency combs generated from a continuous-wave laser

Published: May 01, 2014

Author(s)

David A. Long, Adam J. Fleisher, Kevin O. Douglass, Stephen E. Maxwell, Katarzyna E. Bielska, Joseph T. Hodges, David F. Plusquellic

Abstract

Dual-drive Mach-Zehnder modulators were utilized to produce power-leveled optical frequency combs (OFCs) from a continuous-wave laser. The resulting OFCs contained up to fifty unique frequency components and spanned more than 200 GHz. Simple changes to the modulation frequency allowed for agile control of the comb spacing. These OFCs were then utilized for broadband, multiheterodyne measurements of CO2 using both a multipass cell and an optical cavity. This technique allows for robust measurements of trace gas species and alleviates much of the cost and complexity associated with the use of femtosecond OFCs produced with mode-locked pulsed lasers.
Citation: Optics Letters
Volume: 39
Issue: 9
Pub Type: Journals

Keywords

Optical frequency comb, Spectroscopy, Electro-optic modulator, Multiheterodyne spectroscopy
Created May 01, 2014, Updated November 10, 2018