Sharper focal spot generated by 4π tight focusing of higher-order Laguerre–Gaussian radially polarized beam

Chen, Guiyang; Song, Feng; Wang, Hui-Tian

doi:10.1364/ol.38.003937

Cited by 46 publications

(12 citation statements)

References 22 publications

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“…In a 4 π microscopic system ( Figure 2 ), the vectorial electric field distributions in the focal region can be calculated using the Debye diffraction theory ( Supplementary Equations (1) and (2) ). The interference of the focal fields of the two objectives is 33 …”

Section: Methodsmentioning

confidence: 99%

Three-dimensional super-resolution longitudinal magnetization spot arrays

et al. 2017

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We demonstrate an all-optical strategy for realizing spherical three-dimensional (3D) super-resolution (∼λ3/22) spot arrays of pure longitudinal magnetization by exploiting a 4π optical microscopic setup with two high numerical aperture (NA) objective lenses, which focus and interfere two modulated vectorial beams. Multiple phase filters (MPFs) are designed via an analytical approach derived from the vectorial Debye diffraction theory to modulate the two circularly polarized beams. The system is tailored to constructively interfere the longitudinal magnetization components, while simultaneously destructively interfering the azimuthal ones. As a result, the magnetization field is not only purely longitudinal but also super-resolved in all three dimensions. Furthermore, the MPFs can be designed analytically to control the number and locations of the super-resolved magnetization spots to produce both uniform and nonuniform arrays in a 3D volume. Thus, an all-optical control of all the properties of light-induced magnetization spot arrays has been demonstrated for the first time. These results open up broad applications in magnetic-optical devices such as confocal and multifocal magnetic resonance microscopy, 3D ultrahigh-density magneto-optic memory, and light-induced magneto-lithography.

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Section: Methodsmentioning

confidence: 99%

Three-dimensional super-resolution longitudinal magnetization spot arrays

et al. 2017

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“…This feature enables refinement of material processing and super-resolution microscopy. Some researchers have reported that the complex amplitude distribution on the radial axis modulates the focal depth 35 and the spot size 36,37 , the latter of which is vital for laser processing and manipulation technologies. We have reported that nonlinear propagations in a uniaxial crystal can alter the output complex amplitude distribution on the radial axis even if the input VBSs is unchanged 38 .…”

Section: Introductionmentioning

confidence: 99%

Comprehensive quantitative analysis of vector beam states based on vector field reconstruction

Suzuki

Yamane

Oka

et al. 2019

Sci Rep

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We demonstrate a comprehensive quantitative analysis of vector beam states (VBSs) by using a vector field reconstruction (VFR) technique integrating interferometry and imaging polarimetry, where the analysis is given by a cylindrically polarized Laguerre–Gaussian (LG) mode expansion of VBSs. From test examples of cylindrically polarized LG mode beams, we obtain the complex amplitude distributions of VBSs and perform their quantitative evaluations both in radial and azimuthal directions. The results show that we generated ( l , p ) = (1, 0) LG radially polarized state with a high purity of 98%. We also argue that the cylindrically polarized LG modal decomposition is meaningful for the detail discussion of experimental results, such as analyses of mode purities and mode contaminations. Thus the VFR technique is significant for analyses of polarization structured beams generated by lasers and converters.

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“…In recent years, based on focusing with high numerical aperture (NA) lenses [1][2][3][4], the generation of three-dimensional (3D) focus shaping [5][6][7][8][9][10] has become a hot topic for its wide applications in areas such as optical tweezers for trapping and manipulating particles [3,5] and super-resolution fluorescence microscopes [6,9]. In the former, it is an optical cage that generates a 3D optical potential well that confines the lowrefractive-index particles into the 3D dark hollow central region.…”

Section: Introductionmentioning

confidence: 99%

Effect of the focal shaping generated from different double-mode cylindrical vector beams

Cui

Song

et al. 2015

J. Opt. Soc. Am. A

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We investigate three-dimensional focus shaping generated from double-mode cylindrical vector beams with the Gaussian and Bessel-Gaussian pupil apodization functions by choosing the suitable polarization states of beams. Further, we compare them with that generated from the Laguerre-Gaussian pupil apodization function in the same situation. We find that the focus shaping generated from the Gaussian beam has the smallest zero intensity spot size. However, the situation of the Bessel-Gaussian beam not only possesses stability, which makes it suitable when applied in optical trapping, but also shows the best uniformity, which indicates its excellent performance in super-resolution fluorescence microscopy.

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Sharper focal spot generated by 4π tight focusing of higher-order Laguerre–Gaussian radially polarized beam

Cited by 46 publications

References 22 publications

Three-dimensional super-resolution longitudinal magnetization spot arrays

Three-dimensional super-resolution longitudinal magnetization spot arrays

Comprehensive quantitative analysis of vector beam states based on vector field reconstruction

Effect of the focal shaping generated from different double-mode cylindrical vector beams

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