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Proceedings Paper

Two-photon absorption-induced photoacoustic and luminescence imaging employing a femtosecond laser
Author(s): Gregor Langer; Istvan Attila Veres; Klaus-Dieter Bouchal; Roland Galos; Jakob Kilgus; Peter Burgholzer; Thomas Berer
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Paper Abstract

We present two-photon absorption-induced photoacoustic measurements. Since two-photon photoacoustics is a nonlinear effect numerous physical effects might lead to similar observations. In the presented paper we focus on the effect of the temperature dependent Grüneisen coefficient of water. We discuss the expected theoretical behavior and compare measurements with theoretical predictions. Finally, we demonstrate multimodal photoacoustic and luminescence microscopy via two-photon absorption, and show that it is possible to image objects with localized dyes. Excitation is performed using a femtosecond laser with a wavelength of 800nm. The photoacoustic signals, the luminescence intensity and its spectrum were detected simultaneously.

Paper Details

Date Published: 3 March 2014
PDF: 9 pages
Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 89431V (3 March 2014); doi: 10.1117/12.2037313
Show Author Affiliations
Gregor Langer, Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)
Istvan Attila Veres, RECENDT GmbH (Austria)
Klaus-Dieter Bouchal, RECENDT GmbH (Austria)
Roland Galos, RECENDT GmbH (Austria)
Jakob Kilgus, RECENDT GmbH (Austria)
Peter Burgholzer, Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)
Thomas Berer, Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)


Published in SPIE Proceedings Vol. 8943:
Photons Plus Ultrasound: Imaging and Sensing 2014
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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