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Proceedings Paper

MOPA fiber laser for photoacoustic imaging using arrayed ultrasound transducer
Author(s): Yong-Jae Lee; Jun-Tae Ahn; Eun-Ju Jeong; Hyun-Woo Song; Chang-Geun Ahn; Hyung Wook Noh; Joo Yong Sim; Min Yong Jeon; Susung Lee; Bong Kyu Kim
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Paper Abstract

An Nd:YAG laser is generally used as the optical source for photoacoustic imaging (PAI) systems, which support a high-power pulsed laser. However, PAI systems based on Nd:YAG lasers have several disadvantages, such as instability against impact and vibration, poor mobility, and large size. To overcome the limitations, we demonstrate a PAI system using a master oscillator power amplifier (MOPA) fiber laser and an arrayed ultrasound transducer. The fabricated MOPA fiber laser has a variable repetition rate in the range of 1–50 kHz, a pulse width of 10–70 ns, and an output power of 160 μJ. Furthermore, it is stable to impact and vibration, mobile, and compact with a size of 427×250×170 mm3. We achieved PAI 150 times faster using MOPA fiber laser than using Nd:YAG laser with the arrayed ultrasound transducer composed of 128 elements. Therefore, we believe that the PAI system based on the MOPA fiber laser has significant potential for use as a clinical ultrasound imaging system.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032357 (23 April 2017); doi: 10.1117/12.2267459
Show Author Affiliations
Yong-Jae Lee, Electronics and Telecommunications Research Institute (Korea, Republic of)
Chungnam National Univ. (Korea, Democratic Peoples Republic of)
Jun-Tae Ahn, Electronics and Telecommunications Research Institute (Korea, Republic of)
Eun-Ju Jeong, Electronics and Telecommunications Research Institute (Korea, Republic of)
Hyun-Woo Song, Electronics and Telecommunications Research Institute (Korea, Republic of)
Chang-Geun Ahn, Electronics and Telecommunications Research Institute (Korea, Republic of)
Hyung Wook Noh, Electronics and Telecommunications Research Institute (Korea, Republic of)
Joo Yong Sim, Electronics and Telecommunications Research Institute (Korea, Republic of)
Min Yong Jeon, Chungnam National Univ. (Korea, Republic of)
Susung Lee, Alpinion Medical Systems Co., Ltd. (Korea, Republic of)
Bong Kyu Kim, Electronics and Telecommunications Research Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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