Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7925274 | Optics Communications | 2018 | 6 Pages |
Abstract
Photoacoustic imaging transducer with a pair of wavelength-matched Bragg gratings (forming a Fabry-Perot cavity) inscribed on a short section of microfiber has been developed. A tunable laser with wavelength that matched to one of selected fringe slopes was used to transmit the acoustic induced wavelength. Interferometric fringes with high finesse in transmission significantly enhanced the sensitivity of the transducer even under very small acoustic perturbations. The performance of this novel transducer was evaluated through the imaging studies of human hairs (â¼98 μm in diameter). The spatial resolution is 300 μm. We have demonstrated that the novel transducer developed in this study is a versatile tool for photoacoustic imaging study.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xiu Xin Wang, Zhang Yong Li, Yin Tian, Wei Wang, Yu Pang, Kin Yip Tam,