Journal ArticleDOI
Probing the longitudinal electric field of Bessel beams using second-harmonic generation from nano-objects
Léo Turquet,J. P. Kakko,Lasse Karvonen,Hua Jiang,Esko I. Kauppinen,Harri Lipsanen,Martti Kauranen,Godofredo Bautista +7 more
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TLDR
In this paper, second-harmonic generation from well-defined verticallyaligned gallium-arsenide nanowires was used to characterize the longitudinal electric field components of a focused linearly-polarized Bessel beam.Abstract:
Non-diffractive Bessel beams are receiving significant interest in optical microscopy due to their remarkably large depth of field. For example, studies have shown the superiority of Bessel beams over Gaussian beams for volumetric imaging of three-dimensionally thick or extended samples. However, the vectorial aspects of the focal fields of Bessel beams are generally obscured when traditional methods are used to characterize their three-dimensional point-spread function in space, which contains contributions from all optical field components. Here, we show experimentally the three-dimensional spatial distribution and enhanced depth of field of the longitudinal electric field components of a focused linearly-polarized Bessel beam. This is done through second-harmonic generation from well-defined vertically-aligned gallium-arsenide nanowires, whose second-order response is primarily driven by the longitudinal fields at the beam focus.read more
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Demonstration of longitudinally polarized optical needles.
TL;DR: This work directly verifies the creation and full three-dimensional verification of a longitudinally polarized optical needle, produced by generating a radially polarized Bessel-Gauss beam at the focus of a high numerical aperture microscope objective.
Journal ArticleDOI
Generation of an ultra-long sub-diffracted second-harmonic optical needle from a periodically poled LiNbO3 crystal
Yunzhi Zhu,Huijun Wang,Yihong Zhang,Dongmei Liu,Weihao Zhong,Zhida Gao,Guo-xin Cui,Yan-qing Lu,Yong Zhang,Min Xiao,Min Xiao +10 more
TL;DR: In this paper, the authors used a periodically poled LiNbO3 (PPLN) crystal to produce an ultra-long sub-diffraction optical needle via second-harmonic generation.
Journal ArticleDOI
Vector beams excited nonlinear optical effects
TL;DR: In this article, the authors review the tight focusing and weak focusing properties of vector beams with the desired polarization structure interacting with matter, which result in many novel nonlinear optical effects.
References
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Journal ArticleDOI
Diffraction-free beams.
TL;DR: The first experimental investigation of nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space, is reported.
Journal ArticleDOI
Electromagnetic Diffraction in Optical Systems. II. Structure of the Image Field in an Aplanatic System
B. Richards,Emil Wolf +1 more
TL;DR: In this article, an investigation of the structure of the electromagnetic field near the focus of an aplanatic system which images a point source is made, and the results are illustrated by diagrams and in a tabulated form based on data obtained by extensive calculations on an electronic computor.
Journal ArticleDOI
Exact solutions for nondiffracting beams. I. The scalar theory
TL;DR: In this paper, exact nonsingular solutions of the scalar-wave equation for beams that are non-diffracting were presented, which means that the intensity pattern in a transverse plane is unaltered by propagating in free space.
Journal ArticleDOI
Rapid three-dimensional isotropic imaging of living cells using Bessel beam plane illumination
Thomas A. Planchon,Liang Gao,Daniel E. Milkie,Michael W. Davidson,James A. Galbraith,Catherine G. Galbraith,Eric Betzig +6 more
TL;DR: Scanned Bessel beams are used in conjunction with structured illumination and/or two-photon excitation to create thinner light sheets better suited to three-dimensional (3D) subcellular imaging.