Two-photon absorption-induced photoacoustic and luminescence imaging employing a femtosecond laser

被引：2

作者：

Langer, Gregor ^{[1
]}

Veres, Istvan Attila ^{[2
]}

Bouchal, Klaus-Dieter ^{[2
]}

Galos, Roland ^{[2
]}

Kilgus, Jakob ^{[2
]}

Burgholzer, Peter ^{[1
,2
]}

Berer, Thomas ^{[1
,2
]}

机构：

[1] Christian Doppler Lab Photoacoust Imaging & Laser, Altenberger Str 69, A-4040 Linz, Austria

[2] Res Ctr Non Destruct Testing GmbH RECENDT, A-4040 Linz, Austria

来源：

PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2014 | 2014年 / 8943卷

基金：

奥地利科学基金会;

关键词：

two-photon absorption; photoacoustic imaging; femtosecond laser; Gruneisen coefficient; THERMAL-EXPANSION; MICROSCOPY;

D O I：

10.1117/12.2037313

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 Gruneisen 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.

引用

页数：9

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