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| 1 | 超声声场光学检测的研究进展显示文摘超声声场光学检测研究通过声扰动介质时发生的声光效应,对出射光进行解析即可得到超声声场的相关信息。和常规超声声场检测方法相比,光学检测法是一种非侵入式检测方法,不会对声场造成干扰,该方法具有检测速度快、空间分辨率高、频带范围宽、灵敏度高的优势,被广泛应用于声场检测领域。自从1936年首个声光衍射定量规律提出至今,声光效应在理论研究和声场检测中均取得了重大进展。介绍了超声声场光学检测的基本原理,总结了近年来声场光学检测领域的研究成果,并对声场光学检测的发展方向进行了展望。 | 贾乐成 陈世利 曾周末 | 2019 | 仪器仪表学报2019，40，9： | 6 |
| 2 | Flexible microbubble-based Fabry-Pérot cavity for sensitive ultrasound detection and wide-view photoacoustic imaging显示文摘Interaction of acoustic waves and microbubbles occurs in numerous biomedical applications including ultrasound imaging,drug delivery,lithotripsy treatment,and cell manipulation,wherein the acoustically driven microbub-blcs routincly act as active microscale oscillators or actuators.In contrast,microbubbles were utilized here as passive reccivers to detect broadband ultrasound waves in aqueous environments.The microbubble was photo-thermally generated on a microstructured optical fiber(MOF)tip,forming a flexible Fabry-Perot cavity whose gas-water interface was sensitive to ultrasound waves.The MOF severed as both a low-loss waveguide and a compact light condenser,allowing high-efficiency generation and stabilization of ultrasmall microbubbles.Integrated with all-fiber interferometry,a 10 um diameter microbubble exhibited a low noise-cquivalcnt pressur elevei of^3.4 mPa/Hz^1/2 and a broad bandwidth of^0.8 MHz,capable of detecting weak ultrasounds emittedfrom red blood cells irradiated by pulsed laser light.With advantages of high sensitivity,compact size,and low cost,the microbubble-based ultrasound sensor has great potential in biomedical imaging and sensing applications. | JUN MA YANG HE XUE BAI LI-PENG SUN KA CHEN KYUNGHWAN OH BAI-OU GUAN | 2020 | Photonics Research2020，8，10： | 4 |
| 3 | 用于光声成像的高灵敏度光纤法珀腔传感器显示文摘针对用于光声成像的光纤法珀腔传感器,建立了考虑光电探测器的暗电流噪声和热噪声、探针光源的相对强度噪声和相位噪声的光纤法珀腔传感器的测声信噪比理论模型。理论分析讨论了法珀腔镀膜反射率、法珀腔长、压敏薄膜的厚度和有效半径等参数对光纤法珀腔传感器的测量灵敏度和信噪比的影响,为光纤法珀腔光声传感器的研制和性能优化提供了理论依据。 | 刘静 李渊骥 冯晋霞 刘青梅 张宽收 | 2021 | 量子光学学报2021，27，2： | 3 |
| 4 | 光纤端的等离激元探测技术显示文摘尝试对两类典型的光纤端集成等离激元探测技术的发展进行回顾与梳理,并结合作者的科研实践对本领域未来工作的重点和潜在价值进行讨论。第一类技术是在光纤的端平面集成等离激元谐振传感结构,尤其是等离激元微腔。这种器件既能够插进微量样品通过dip-and-read方式进行生物分子传感,也能够伸入狭小的空间进行超声内窥探测。未来,如何在秉持方便、快速核心价值的基础上,解决复杂样品中低含量分子检测的难题,是这类器件进入医学诊断和食品检验应用领域的关键;而如何大幅提高表面等离激元谐振传感器对声信号的灵敏度,是实现具有重要应用价值的光纤表面等离激元谐振水听器阵列的关键。第二类技术是在锥形光纤尖端集成等离激元天线探针。结合各种扫描探针显微技术,这种器件提供了对等离激元天线的高精度动态调控能力,及通过等离激元热点与样品的强烈作用进行高分辨扫描成像的能力。未来,通过对天线探针和可测量物理量的创新研究,有望进一步扩展可表征物理和化学现象的范围,显著提升表征性能。 | 杨天 陈成 王晓丹 周鑫 雷泽雨 | 2019 | 激光与光电子学进展2019，56，20： | 3 |
| 5 | Research on separation and enhancement of speech micro-vibration from macro motion显示文摘Based on the 1 550 nm all-fiber pulsed laser Doppler vibrometer(LDV) system independently developed by our laboratory, empirical mode decomposition(EMD) and optimally modified Log-spectral amplitude estimator(OM-LSA) algorithms are associated to separate the speech micro-vibration from the target macro motion. This combined algorithm compensates for the weakness of the EMD algorithm in denoising and the inability of the OM-LSA algorithm on signal separation, achieving separation and simultaneous acquisition of the macro motion and speech micro-vibration of a target. The experimental results indicate that using this combined algorithm, the LDV system can functionally operate within 30 m and gain a 4.21 d B promotion in the signal-to-noise ratio(SNR) relative to a traditional OM-LSA algorithm. | 陈鸿凯 王挺峰 吴世松 李远洋 | 2020 | Optoelectronics Letters2020，16，6： | 1 |
| 6 | 基于单纵模纳秒脉冲激光的光学分辨率光声显微成像显示文摘本文设计并搭建了一套激励光和超声探测器对向共轴共焦的具备亚细胞尺度成像分辨率和毫米级成像深度的光学分辨率光声显微成像(OR-PAM:Optical-resolution photoacoustic microscopy)系统。与基于多纵模脉冲激光激励的光声成像系统相比,使用自制的单纵模纳秒532 nm脉冲激励光源,将光声探测的信号强度提高了1.35倍,测得成像系统的轴向分辨率为18μm,横向分辨率为8μm,成像深度为1.54 mm,成像深度-横向空间分辨率比达192.5。利用研制的OR-PAM系统对嵌有碳纤维丝的仿体样品以及活体小鼠的耳朵进行成像,获得了高分辨率的图像。 | 刘江波 李渊骥 冯晋霞 张宽收 | 2022 | 量子光学学报2022，28，1： | 1 |
| 7 | 基于激光传感的水下声学目标高分辨跟踪方法显示文摘高分辨感知声波相位是实现水下声学目标跟踪与定位的核心问题之一。传统方法基于压电效应完成目标信号的相位感知,在传感机理上存在相位分辨率相对较低、障板干扰、声波振动起讫点不明等问题。本团队提出了基于声光效应的新型激光阵列水声相位高分辨传感方法,并设计了由5束平行激光组成的阵列传感装置(装置孔径为340 mm),并于消声水池条件下验证了该装置的有效性。实验结果显示,本方法的水声相位感知分辨率优于1°,水下目标跟踪的角度分辨率优于0.05°。该方法为新型水下目标高分辨跟踪定位技术的发展提供了研究储备。 | 蔡旺 王栋梁 冯伟 董繁鹏 魏亚明 贾乐成 田文杰 薛彬 | 2022 | 中国激光2022，49，18： | 1 |
| 8 | 生物光声成像中声反射伪影抑制方法的研究进展显示文摘生物光声成像(Photoacoustic Imaging,PAI)是一种新型的无创复合功能成像方法。生物组织不均匀的声学特性会使超声波在组织界面处发生反射,导致重建图像中存在伪影和失真,降低图像质量和成像深度。文中综述了目前抑制PAI声反射伪影的主要方法,包括延迟相减法、基于杂波去相关理论的方法、短滞后空间相干法、基于深度学习的方法、光声引导聚焦超声法、基于超声平面波模型的方法和多波长激励的方法等,详细介绍各方法的原理,分析其优势和不足,并展望未来的研究趋势。 | 孙正 张小雪 | 2021 | 计算机科学2021，48，S01： | 0 |
| 9 | Full noncontact laser ultrasound:first human data显示文摘Full noncontact laser ultrasound(LUS)imaging has several distinct advantages over current medical ultrasound(US)technologies:elimination of the coupling mediums(gel/water),operator-independent image quality,improved repeatability,and volumetric imaging.Current light-based ultrasound utilizing tissue-penetrating photoacoustics(PA)generally uses traditional piezoelectric transducers in contact with the imaged tissue or carries an optical fiber detector close to the imaging site.Unlike PA,the LUS design presented here minimizes the optical penetration and specifically restricts optical-to-acoustic energy transduction at the tissue surface,maximizing the generated acoustic source amplitude.With an appropriate optical design and interferometry,any exposed tissue surfaces can become viable acoustic sources and detectors.LUS operates analogously to conventional ultrasound but uses light instead of piezoelectric elements.Here,we present full noncontact LUS results,imaging targets at~5 cm depths and at a meterscale standoff from the target surface.Experimental results demonstrating volumetric imaging and the first LUS images on humans are presented,all at eye-and skin-safe optical exposure levels.The progression of LUS imaging from tissue-mimicking phantoms,to excised animal tissue,to humans in vivo is shown,with validation from conventional ultrasound images.The LUS system design insights and results presented here inspire further LUS development and are a significant step toward the clinical implementation of LUS. | Xiang Zhang Jonathan R.Fincke Charles M.Wynn Matt R.Johnson Robert W.Haupt Brian W.Anthony | 2019 | Light(Science & Applications)2019，8，1： | 0 |
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