紧密聚焦光场的超快多目标控制

IF 15.3 1区 物理与天体物理 Q1 OPTICS
Yanxiang Zhang, Xiaofei Liu, Han Lin, Dan Wang, E. Cao, Shaoding Liu, Zhongquan Nie, B. Jia
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引用次数: 16

摘要

超快光场的控制是发展超快光学以及研究各种超短脉冲光-物质相互作用的重要内容。然而,传统的空间编码方法只有有限的可操纵目标,往往忽略了时间效应,从而阻碍了它们的广泛应用。本文提出了一种基于时变矢量衍射理论与快速傅立叶变换的简单结合来实现多目标焦场超快调制的新概念。这是通过在紧聚焦条件下用单物镜聚焦携带矢量涡的飞秒脉冲光来实现的。研究发现,在可配置的时间持续时间(~ 400fs)内,超快时间自由度在决定一次聚焦光场的丰富和奇异特征(即明暗交替、周期旋转和纵向/横向偏振转换)中起着关键作用。潜在的控制机制已经被揭开。时空演化光束的这些特殊行为,除了在不同的超快光谱体系中引起学术兴趣外,还可能为多功能集成光学芯片、高效激光捕获、微观结构旋转、超分辨率光学显微镜、精确光学测量和活性跟踪等超快相关应用提供基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultrafast multi-target control of tightly focused light fields
The control of ultrafast optical field is of great interest in developing ultrafast optics as well as the investigation on various light-matter interactions with ultrashort pulses. However, conventional spatial encoding approaches have only limited steerable targets usually neglecting the temporal effect, thus hindering their broad applications. Here we present a new concept for realizing ultrafast modulation of multi-target focal fields based on the facile combination of time-dependent vectorial diffraction theory with fast Fourier transform. This is achieved by focusing femtosecond pulsed light carrying vectorial-vortex by a single objective lens under tight focusing condition. It is uncovered that the ultrafast temporal degree of freedom within a configurable temporal duration (~400 fs) plays a pivotal role in determining the rich and exotic features of the focused optical field at one time, namely, bright-dark alternation, periodic rotation, and longitudinal/transverse polarization conversion. The underlying control mechanisms have been unveiled. Besides being of academic interest in diverse ultrafast spectral regimes, these peculiar behaviors of the space-time evolutionary beams may underpin prolific ultrafast-related applications such as multifunctional integrated optical chip, high-efficiency laser trapping, microstructure rotation, super-resolution optical microscopy, precise optical measurement, and liveness tracking.
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来源期刊
CiteScore
19.30
自引率
7.10%
发文量
128
期刊介绍: Opto-Electronic Advances (OEA) is a distinguished scientific journal that has made significant strides since its inception in March 2018. Here's a collated summary of its key features and accomplishments: Impact Factor and Ranking: OEA boasts an impressive Impact Factor of 14.1, which positions it within the Q1 quartiles of the Optics category. This high ranking indicates that the journal is among the top 25% of its field in terms of citation impact. Open Access and Peer Review: As an open access journal, OEA ensures that research findings are freely available to the global scientific community, promoting wider dissemination and collaboration. It upholds rigorous academic standards through a peer review process, ensuring the quality and integrity of the published research. Database Indexing: OEA's content is indexed in several prestigious databases, including the Science Citation Index (SCI), Engineering Index (EI), Scopus, Chemical Abstracts (CA), and the Index to Chinese Periodical Articles (ICI). This broad indexing facilitates easy access to the journal's articles by researchers worldwide. Scope and Purpose: OEA is committed to serving as a platform for the exchange of knowledge through the publication of high-quality empirical and theoretical research papers. It covers a wide range of topics within the broad area of optics, photonics, and optoelectronics, catering to researchers, academicians, professionals, practitioners, and students alike.
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