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您的检索式：作者名="Amir Rosenthal"
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| 1 | Looking at sound: optoacoustics with all-optical ultrasound detection显示文摘Originally developed for diagnostic ultrasound imaging,piezoelectric transducers are the most widespread technology employed in optoacoustic(photoacoustic)signal detection.However,the detection requirements of optoacoustic sensing and imaging differ from those of conventional ultrasonography and lead to specifications not sufficiently addressed by piezoelectric detectors.Consequently,interest has shifted to utilizing entirely optical methods for measuring optoacoustic waves.All-optical sound detectors yield a higher signal-to-noise ratio per unit area than piezoelectric detectors and feature wide detection bandwidths that may be more appropriate for optoacoustic applications,enabling several biomedical or industrial applications.Additionally,optical sensing of sound is less sensitive to electromagnetic noise,making it appropriate for a greater spectrum of environments.In this review,we categorize different methods of optical ultrasound detection and discuss key technology trends geared towards the development of all-optical optoacoustic systems.We also review application areas that are enabled by all-optical sound detectors,including interventional imaging,non-contact measurements,magnetoacoustics,and nondestructive testing. | Georg Wissmeyer Miguel A.Pleitez Amir Rosenthal Vasilis Ntziachristos | 2018 | Light(Science & Applications)2018，7，1： | 9 |
| 2 | Hybrid optical parametrically-oscillating emitter at 1930 nm for volumetric photoacoustic imaging of water content显示文摘Water plays a vital role in biological metabolism and it would be essential to trace the water content non-invasively,such as leveraging the vibrational absorption peak of the O-H bond.However,due to the lack of an efficient laser source,it was challenging to image the water content in the deep tissue with micron-level spatial resolution.To address this problem,we develop a high-power hybrid optical parametrically-oscillating emitter(HOPE)at 1930 nm,at which the vibrational absorption peak of the O-H bond locates.The maximum pulse energy is over 1.74μJ with a pulse repetition rate of 50 kHz and a pulse width of 15 ns.We employ this laser source in the optical-resolution photoacoustic microscopy(OR-PAM)system to image the water content in the phantom and the biological tissue in vitro.Our 1930-nm OR-PAM could map the water content in the complex tissue environment at high spatial resolution,deep penetration depth,improved sensitivity,and suppressed artifact signal of the lipid. | Jiawei Shi Mingsheng Li Huajun Tang Jiqiang Kang Najia Sharmin Amir Rosenthal Kenneth K.Y.Wong | 2022 | eLight2022，2，1： | 1 |
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