23 April 2017 MOPA fiber laser for photoacoustic imaging using arrayed ultrasound transducer
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032357 (2017) https://doi.org/10.1117/12.2267459
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
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.
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Yong-Jae Lee, Yong-Jae Lee, Jun-Tae Ahn, Jun-Tae Ahn, Eun-Ju Jeong, Eun-Ju Jeong, Hyun-Woo Song, Hyun-Woo Song, Chang-Geun Ahn, Chang-Geun Ahn, Hyung Wook Noh, Hyung Wook Noh, Joo Yong Sim, Joo Yong Sim, Min Yong Jeon, Min Yong Jeon, Susung Lee, Susung Lee, Bong Kyu Kim, Bong Kyu Kim, } "MOPA fiber laser for photoacoustic imaging using arrayed ultrasound transducer ", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032357 (23 April 2017); doi: 10.1117/12.2267459; https://doi.org/10.1117/12.2267459
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