title: Localized thermal mapping using coherent anti-Stokes Raman spectroscopy.
abstract: Coherent anti-Stokes Raman scattering (CARS) spectroscopy is explored as a tool for obtaining micro-scale thermal measurements. A single femtosecond oscillator is used to pump a photonic crystal fiber to provide the broadband Stokes pulse. The CARS signals from the broad OH-stretching modes between 3000 and 3600 cm(-1) are shown to correlate with temperature with an accuracy of ± 1°C for water and ± 1.5°C for phosphate-buffered saline. Local variation of temperature is mapped on a microscopic level, using black-dyed microspheres as thermal sources.
authors.affiliation: Air Force Research Laboratory, 4141 Petroleum Road, Building 3260 Fort Sam, Houston, TX 78234, USA. hopebeier@gmail.com
authors.forename: Hope T
authors.initials: HT
authors.lastname: Beier
authors.forename: Gary D
authors.initials: GD
authors.lastname: Noojin
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Rockwell
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*; D013817:Thermography / Q000295:instrumentation*