Open AccessHigh-speed dual-layer scanning photoacoustic microscopy using focus tunable lens modulation at resonant frequency
Author(s) -
Kiri Lee,
Euiheon Chung,
Seungrag Lee,
Tae Joong Eom
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.026427
Subject(s) - optics , lens (geology) , materials science , depth of focus (tectonics) , numerical aperture , focal length , microscopy , focus (optics) , modulation (music) , aperture (computer memory) , frequency modulation , microscope , physics , telecommunications , bandwidth (computing) , acoustics , wavelength , paleontology , subduction , biology , computer science , tectonics
The range of imaging depth in optical resolution photoacoustic microscopy (PAM) is limited by the short depth of focus of high-numerical aperture objective lenses. In this paper, focus tunable lens modulation has been employed at the resonant frequency of focus tunable lenses in order to enhance both the range of imaging depth and the scanning speed. By electrically controlling the focal length in the axial direction of the sample, the range of imaging depth was extended approximately 1.22 times and the scanning speed was enhanced by approximately 7.40 times, in comparison to corresponding values of conventional PAM systems.