A new high-frequency photoacoustic sensing probe using silicon acoustic delay lines
A new high-frequency photoacoustic sensing probe using silicon acoustic delay lines
复制标题
使用硅声延迟线的新型高频光声传感探头
DOI：
10.1117/12.2582745
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Zou, Jun
中科院分区：
文献类型：
--
作者：
Ustun, Arif Kivanc;Zou, Jun
在本文中，我们报告了一种高频光声传感 (PAS) 探头设计，由用于光传输的光纤和用于检测/中继 PA 信号的两个硅声延迟线 (SADL) 组成。光纤远端形成有斜面的尖端，以使照明区域与 SADL 的检测区域重叠。检测到的 PA 信号通过 SADL 以低损耗传输，频率高达 17 MHz。为了进行演示，我们设计、制造并测试了使用 SADL 的 PAS 探针原型。测试结果表明，PAS 探头具有卓越的灵敏度和相当大的高频改进。
In this paper, we report a high-frequency photoacoustic sensing (PAS) probe design consisting of an optical fiber for light delivery and two silicon acoustic delay lines (SADLs) for detecting/relaying the PA signals. A beveled tip is formed at the distal end of the optical fiber to overlap the illumination region with the detection zone of the SADLs. Detected PA signals are transmitted through the SADLs with low loss at frequencies up to 17 MHz. For demonstration, a prototype PAS probe using SADLs is designed, fabricated, and tested. Testing results show that the PAS probe provides superior sensitivity with considerable high-frequency improvement.