title: Monitoring stimulated Raman scattering with photoacoustic detection.
abstract: A capability of high-frequency ultrasound detection to monitor the process of energy deposition into a molecular system via Raman excitation is experimentally demonstrated. It is shown that the generated ultrasound signal is directly proportional to the optical signal generated in stimulated Raman scattering. Ultrasound detection provides a simple way to discriminate against laser-induced breakdown and allows for the quantification of the stimulated Raman scattering process where direct optical detection is not available. Additionally, it can be used for stimulated Raman imaging in deep tissue, provided that the generated photoacoustic signal is sufficiently strong.
authors.affiliation: Department of Physics, University of Wisconsin-Milwaukee, 1900 E. Kenwood Boulevard, Milwaukee, Wisconsin 53211, USA. yakovlev@uwm.edu
authors.forename: Vladislav V
authors.initials: VV
authors.lastname: Yakovlev
authors.forename: Gary D
authors.initials: GD
authors.lastname: Noojin
authors.forename: Michael L
authors.initials: ML
authors.lastname: Denton
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Rockwell
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Thomas
mesh_terms: D000162:Acoustics; D008899:Mineral Oil / Q000737:chemistry; D055620:Optical Phenomena; D013059:Spectrum Analysis, Raman; D014465:Ultrasonics
chemical_list: D008899:Mineral Oil