Abstract
Ultrasound imaging has been widely used in medical diagnosis due to its noninvasive, radiation-free, and real-time features. Optical resonance-based ultrasound sensors possess high sensitivity and broad bandwidth, but they need to operate in specific laser wavelengths or angles, which restricts their application in array sensing. Non-resonance-based optical sensing arrays did not perform with sufficient bandwidths or frame rates. Here we propose a fiber optic-based ultrasound sensing array with relatively high sensitivity, wide bandwidth, and three-dimensional (3D) sensing capabilities, which is potentially useful in medical imaging. Specifically, we experimentally demonstrated that the optical ultrasound sensor exhibited a noise equivalent pressure of 165 Pa, pressure nonlinearity of ${\lt 5}\% $, $ - {3}\,\,{\rm dB}$ angular uniformity of $ \pm {71}^\circ ,$ and $ - {6}\,\,{\rm dB}$ bandwidth from $\sim{0}$ to 27.2 MHz. For 3D sensing capabilities in spherical coordinates, the errors of the radial distance were within 5%, and the errors for the polar and azimuthal angles were within 4° and 2°, respectively. This demonstrated the viability and high performance of the array for 3D ultrasound sensing.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Jingcheng Zhou, Xu Guo, Cong Du, and Xingwei Wang
Opt. Lett. 44(21) 5390-5393 (2019)
Xiangdong Ma, Bingxue Liu, Yiqi Cai, Donglin Jia, Bo Fu, Lijun Xu, and Jianguo Ma
Opt. Lett. 45(9) 2526-2529 (2020)
Liuyang Yang, Chenhao Dai, Anqi Wang, Geng Chen, Dongchen Xu, Yanpeng Li, Zhijun Yan, and Qizhen Sun
Opt. Lett. 47(15) 3700-3703 (2022)