■在光声(PA)技术中,时域中的激光照射(即,激光脉冲持续时间)控制PA成像的特性-它在光声相互作用中起着至关重要的作用,PA信号的产生,和PA成像性能。
■我们旨在全面分析激光脉冲持续时间对PA成像各个方面的影响,包括信噪比,PA成像的空间分辨率,声波的声波频谱,特定物理现象的开始,和光热-PA(PT-PA)相互作用/转化。
■通过调查和审查最先进的调查,在生物医学PA成像的背景下,我们讨论了激光脉冲持续时间对PA信号生成的影响。
■首先,我们讨论了激光脉冲持续时间对PA信号幅度的影响及其与PA成像横向分辨率的相关性。随后,考虑声频谱,分析了PA成像的轴向分辨率与激光脉冲持续时间之间的关系。此外,我们研究了脉冲持续时间的操纵来触发物理现象及其相关应用。此外,我们详细阐述了脉冲持续时间的调整,以操纵从PT到PA效应的转换过程和比率。
■我们有助于理解与脉冲宽度相关的PA技术的物理机制。通过深入了解激光脉冲影响背后的机制,我们可以针对特定的PA应用触发与脉冲相关的物理现象,增强生物医学成像场景中的PA成像性能,并通过精确调整脉冲持续时间来调制PT-PA转换。
UNASSIGNED: In the photoacoustic (PA) technique, the laser irradiation in the time domain (i.e., laser pulse duration) governs the characteristics of PA imaging-it plays a crucial role in the optical-acoustic interaction, the generation of PA signals, and the PA imaging performance.
UNASSIGNED: We aim to provide a comprehensive analysis of the impact of laser pulse duration on various aspects of PA imaging, encompassing the signal-to-noise ratio, the spatial resolution of PA imaging, the acoustic frequency spectrum of the acoustic wave, the initiation of specific physical phenomena, and the photothermal-PA (PT-PA) interaction/conversion.
UNASSIGNED: By surveying and reviewing the state-of-the-art investigations, we discuss the effects of laser pulse duration on the generation of PA signals in the context of biomedical PA imaging with respect to the aforementioned aspects.
UNASSIGNED: First, we discuss the impact of laser pulse duration on the PA signal amplitude and its correlation with the lateral resolution of PA imaging. Subsequently, the relationship between the axial resolution of PA imaging and the laser pulse duration is analyzed with consideration of the acoustic frequency spectrum. Furthermore, we examine the manipulation of the pulse duration to trigger physical phenomena and its relevant applications. In addition, we elaborate on the tuning of the pulse duration to manipulate the conversion process and ratio from the PT to PA effect.
UNASSIGNED: We contribute to the understanding of the physical mechanisms governing pulse-width-dependent PA techniques. By gaining insight into the mechanism behind the influence of the laser pulse, we can trigger the pulse-with-dependent physical phenomena for specific PA applications, enhance PA imaging performance in biomedical imaging scenarios, and modulate PT-PA conversion by tuning the pulse duration precisely.