Abstract

All-optical ultrasound probes that contain a photoacoustically-based ultrasound generator paired with a photonic acoustic sensor provide a promising imaging modality for diagnostic and MRI-compatible applications. Here, we demonstrate the fabrication of a fiber-based all-optical ultrasound probe and its applications in pulse-echo ultrasound imaging. The ultrasound generator is fabricated on a 125 μm multimode optical fiber by forming a light-absorbing multiwalled carbon nanotube (MWCNT)-polydimethylsiloxane (PDMS) composite coating on its distal end. A peak-to-peak acoustic pressure of 0.95 MPa was achieved with laser irradiation at 2.46 μJ by chemically functionalizing the fiber surface to enable a strong adsorption. Ultrasound reception was performed by a fiber-laser ultrasound sensor that translates ultrasound pressure into differential lasing-frequency changes. By linearly scanning the probe, ex vivo two- and three-dimensional imaging of a segment of swine trachea was demonstrated by detecting the echo ultrasound signals and reconstructing the acoustic scatterers. The probe presents axial and lateral resolutions at 150 and 62 μm, respectively. The small-sized, side-looking all-fiber ultrasound probe presents a promising approach for assembling an interventional endoscopy.

© 2019 Chinese Laser Press

In vivo endoscopic ultrasound imaging with a rotational-scanning, all-optical ultrasound probe

Qi Zhang, Chaoneng Wu, Kai Long, Cheng Huang, Xiaoxuan Zhong, Xue Bai, Linghao Cheng, Long Jin, Yizhi Liang, and Bai-Ou Guan
Opt. Lett. 48(7) 1926-1929 (2023)

Single optical fiber based forward-viewing all-optical ultrasound self-transceiving probe

Yujie Chen, Yan Wang, Tunan Lv, Junning Zhang, and Hongbin Yu
Opt. Lett. 48(4) 868-871 (2023)

All-optical photoacoustic imaging system using fiber ultrasound probe and hollow optical fiber bundle

Yusuke Miida and Yuji Matsuura
Opt. Express 21(19) 22023-22033 (2013)

Miniature all-optical probe for large synthetic aperture photoacoustic-ultrasound imaging

Guangyao Li, Zhendong Guo, and Sung-Liang Chen
Opt. Express 25(21) 25023-25035 (2017)

All-optical ultrasound catheter for rapid B-mode oesophageal imaging

India Lewis-Thompson, Edward Z. Zhang, Paul C. Beard, Adrien E. Desjardins, and Richard J. Colchester
Biomed. Opt. Express 14(8) 4052-4064 (2023)