Open AccessFiber endface photoacoustic generator for quantitative photoacoustic tomography
Author(s) -
Guang Yang,
Hengbo Huang,
Hongbo R. Luo,
Sitai Kou,
Eghbal Amidi,
Samuel Achilefu,
Quing Zhu
Publication year - 2021
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.426033
Subject(s) - materials science , optics , attenuation coefficient , optical fiber , transducer , photoacoustic imaging in biomedicine , laser , optical coherence tomography , fiber laser , optoelectronics , acoustics , wavelength , physics
We demonstrate a novel fiber endface photoacoustic (PA) generator using infrared (IR) 144 laser dye dispersed within an ultraviolet adhesive. The generator provides a wide acoustic bandwidth in the transducer frequency range of 2-7 MHz, high thermal conversion efficiency (${\gt}90\%$), good PA signal controllability (well-controlled IR 144 concentration), and high feasibility (simple procedures). Through a series of experimental validations, we show that this fiber-based endface PA generator can be a useful tool for a broad range of biomedical applications such as calibrating the local absorption coefficient of biological tissue for quantitative PA tomography.