1 August 2014 Investigating femtosecond-laser-induced two-photon photoacoustic generation
Author Affiliations +
J. of Biomedical Optics, 19(8), 085001 (2014). doi:10.1117/1.JBO.19.8.085001
Abstract
We investigated two-photon absorption-based photoacoustic generation and compared it with corresponding photoluminescence emission. Experimental results revealed expected quadratic dependences on the incident optical fluence in both photoacoustic and photoluminescence processes. We also investigated the influence of optical scattering on the generation of two-photon photoacoustic and photoluminescence signals and found that photoacoustic signals attenuated more slowly than photoluminescence signals when the optical scattering coefficient was increased, which was attributed to a weaker ultrasonic attenuation than that the optical attenuation in the scattering medium. Finally, we showed three-dimensional two-photon photoacoustic imaging.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ben E. Urban, Ji Yi, Vladislav Yakovlev, Hao F. Zhang, "Investigating femtosecond-laser-induced two-photon photoacoustic generation," Journal of Biomedical Optics 19(8), 085001 (1 August 2014). http://dx.doi.org/10.1117/1.JBO.19.8.085001
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KEYWORDS
Signal attenuation

Scattering

Ultrasonics

Photoacoustic spectroscopy

Absorption

Tissue optics

Luminescence

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