TY - JOUR AU - Kevin Knabe AU - Paul Williams AU - Fabrizio Giorgetta AU - Chris Armacost AU - Michael Radunsky AU - Nathan Newbury C2 - Optics Express DA - 2012-05-21 LA - en M1 - 20 PB - Optics Express PY - 2012 TI - Frequency characterization of a swept and fixed-wavelength external-cavity quantum cascade laser by use of a frequency comb UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911127 ER -