TY - CONF AU - Kevin Knabe AU - Paul Williams AU - Fabrizio Giorgetta AU - Chris Armacost AU - Michael Radunsky AU - Nathan Newbury C2 - Proceedings of Laser Applications to Chemical, Security and Environmental Analysis, San Diego, CA DA - 2012-01-25 LA - en PB - Proceedings of Laser Applications to Chemical, Security and Environmental Analysis, San Diego, CA PY - 2012 TI - Frequency Characterization of an External-Cavity Quantum Cascade Laser at 4.5 υm using a Frequency Comb ER -