Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Frequency characterization of a swept and fixed-wavelength external-cavity quantum cascade laser by use of a frequency comb

Published

Author(s)

Kevin O. Knabe, Paul A. Williams, Fabrizio R. Giorgetta, Chris Armacost, Michael Radunsky, Nathan R. Newbury

Abstract

The instantaneous optical frequency of an external-cavity quantum cascade laser (QCL) is characterized by comparison to a near-infrared frequency comb. Fluctuations in the instantaneous optical frequency are analyzed to determine the frequency noise power spectral density for the external-cavity QCL both during fixed wavelength operation and swept wavelength operation. This same combination of external-cavity QCL and comb can be applied to rapid, precise broadband spectroscopy.
Citation
Optics Express
Volume
20
Issue
11

Keywords

continuous wave, cw, fiber comb, frequency comb, laser characterization, metrology, mid-infrared, mid-IR, QCL, quantum cascade laser spectroscopy

Citation

Knabe, K. , Williams, P. , Giorgetta, F. , Armacost, C. , Radunsky, M. and Newbury, N. (2012), Frequency characterization of a swept and fixed-wavelength external-cavity quantum cascade laser by use of a frequency comb, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911127 (Accessed May 20, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 21, 2012, Updated December 12, 2017