Broadband optical ultrasound sensor with a unique open-cavity structure

被引：18

作者：

Chow, Cohn M. ^{[2
]}

Zhou, Yun ^{[3
]}

Guo, Yunbo ^{[2
]}

Norris, Theodore B. ^{[2
]}

Wang, Xueding ^{[4
]}

Deng, Cheri X. ^{[3
]}

Ye, Jing Yong ^{[1
]}

机构：

[1] Univ Texas San Antonio, Dept Biomed Engn, San Antonio, TX 78249 USA

[2] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Radiol, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF BIOMEDICAL OPTICS | 2011年 / 16卷 / 01期

基金：

美国国家卫生研究院;

关键词：

optical ultrasound sensor; ultrasound imaging; photoacoustic imaging; hydrophone; PHOTONIC CRYSTAL-STRUCTURE; TOTAL-INTERNAL-REFLECTION; MEMBRANE HYDROPHONE; FREQUENCY-RESPONSE; INTERFEROMETER; MHZ;

D O I：

10.1117/1.3528014

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

High-resolution ultrasound imaging requires quality sensors with wide bandwidth and high sensitivity, as shown in a wide range of applications, including intravascular imaging of cardiovascular diseases. However, piezoelectric technology, the current dominant approach for hydrophone fabrication, has encountered many technical limitations in the high-frequency range. Using optical techniques for the detection of high-frequency ultrasound signals has attracted much recent attention. One of the most studied approaches is based on a Fabry-Perot interferometer, consisting of an optical cavity sandwiched between two mirrors. This technique offers promising sensitivity and bandwidth, and a potential alternative to piezoelectric polyvinylidene fluoride (PVDF) hydrophones. We propose an innovative optical ultrasound sensor using only a single mirror in a total-internal-reflection configuration. Besides retaining the advantages of Fabry-Perot interferometer-based ultrasound sensors, this unique design provides a bandwidth of at least 160 MHz, a potential decrease in fabrication cost, and an increase in signal fidelity. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3528014]

引用

页数：6

共 23 条

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