Abstract

A fiber-tetherable non-contact photoacoustic remote sensing microscopy system capable of multiplex functional imaging is reported. By utilizing stimulated Raman scattering within an over-pumped polarization-maintaining single-mode optical fiber, rapid pulse-to-pulse switching (500 kHz) of excitation spectral content is demonstrated and utilized as a photoacoustic excitation source. These rapid acquisitions aim to reduce motion artifacts and facilitate high frame rates appropriate for real-time feedback to users. The system is characterized by estimating blood oxygen saturation in blood-flow phantoms and within a mouse ear in vivo.

© 2019 Optical Society of America

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Supplementary Material (1)

NameDescription
» Visualization 1       Simulated Raman scattering spectra produced by non-linear pumping of a single-mode optical fiber. Here the input modulation is slowed to 2 Hz so that the changes to the output spectra can be seen.

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