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Proceedings Paper

Focus-free optical-resolution photoacoustic microscopy using an all-fiber Bessel beam generator
Author(s): Chulhong Kim; Sungjo Park; Jongki Kim; Sungrae Lee; Mansik Jeon; Jeehyun Kim; Kyunghwan Oh
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Paper Abstract

Optical-resolution photoacoustic microscopy (OR-PAM) becomes a premier microscopic imaging tool in biomedicine because it provides agent-free optical absorption information in tissues. By tightly focusing light to a spot, the fine lateral resolution can be achieved in OR-PAM. The focal spot size is typically determined by the numerical aperture of the used objective lens. Here, we demonstrate focus-free OR-PAM using a Bessel beam generator. In this approach, no objective lens is required. We have photoacoustically imaged a carbon fiber with a diameter of ~6 μm, and the measured lateral resolution was ~6-7 μm. Beneficially, the complexities of the existing OR-PAM systems can be greatly relieved.

Paper Details

Date Published: 4 March 2013
PDF: 6 pages
Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85812F (4 March 2013); doi: 10.1117/12.2003303
Show Author Affiliations
Chulhong Kim, Univ. at Buffalo, SUNY (United States)
Sungjo Park, Kyungpook National Univ. (Korea, Republic of)
Jongki Kim, Yonsei Univ. (Korea, Republic of)
Sungrae Lee, Yonsei Univ. (Korea, Republic of)
Mansik Jeon, Univ. at Buffalo, SUNY (United States)
Jeehyun Kim, Kyungpook National Univ. (Korea, Republic of)
Kyunghwan Oh, Yonsei Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8581:
Photons Plus Ultrasound: Imaging and Sensing 2013
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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