title: Stimulated Raman scattering using a single femtosecond oscillator with flexibility for imaging and spectral applications.
abstract: Stimulated Raman scattering (SRS) is a powerful tool for obtaining background-free chemical information about a material without extrinsic labeling. Background-free spectra are particularly important in the fingerprint region (~800 and 1800 cm(-1)) where peaks are narrow, closely-spaced, and may be in abundance for a particular chemical. We demonstrate a method for obtaining SRS spectra using a single femtosecond laser oscillator. A photonic crystal fiber is used to create a supercontinuum to provide a range of Stokes shifts from ~300 to 3400 cm(-1). This SRS approach provides for collection capabilities that are easily modified between obtaining broadband spectra and single-frequency images.
authors: U. S. Air Force Research Laboratory, 4141 Petroleum Drive, Fort Sam Houston, TX 78234, USA. hopebeier@gmail.com
authors: Hope T
authors: HT
authors: Beier
authors: Gary D
authors: GD
authors: Noojin
authors: Benjamin A
authors: BA
authors: Rockwell
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D007834:Lasers; D008853:Microscopy / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*