title: Near-infrared multispectral photoacoustic microscopy using a graded-index fiber amplifier.
abstract: We demonstrate optical resolution photoacoustic microscopy (OR-PAM) of lipid-rich tissue using a multi-wavelength pulsed laser based on nonlinear fiber optics. 1047 nm laser pulses are converted to 1098, 1153, 1215, and 1270 nm pulses via stimulated Raman scattering in a graded-index multimode fiber. Multispectral PAM of a lipid phantom is demonstrated with our low-cost and simple technique.
authors.affiliation: Department of Electrical and Computer Engineering, Union College, Schenectady, NY 12308, USA; Bioengineering Program, Union College, Schenectady, NY 12308, USA.
authors.forename: Takashi
authors.initials: T
authors.lastname: Buma
authors.affiliation: Bioengineering Program, Union College, Schenectady, NY 12308, USA.
authors.forename: Jessica L
authors.initials: JL
authors.lastname: Farland
authors.affiliation: Bioengineering Program, Union College, Schenectady, NY 12308, USA.
authors.forename: Margaret R
authors.initials: MR
authors.lastname: Ferrari
keywords: Graded-index multimode fiber; Photoacoustic microscopy; Stimulated Raman scattering