Imaging with a longitudinal electric field in confocal laser scanning microscopy to enhance spatial resolution

Kozawa, Yuichi; Sakashita, Ryota; Uesugi, Yuuki; Sato, Shunichi

doi:10.1364/oe.396778

Cited by 18 publications

(5 citation statements)

References 31 publications

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“…In nonlinear microscopy, CVBs have been used most extensively for SHG. Studies with these engineered vector beams have shown their potential for imaging advancements including the potential for superresolution, , orientation, and control of the enhancement or suppression of signal. − Figure shows just how strongly the SHG signal from GaAs nanowires is impacted by the polarization of the excitation field . CVBs could easily venture into the realms of other nonlinear microscopy techniques to provide advancements for the study of a variety of systems in the future.…”

Section: Intriguing Illuminationmentioning

confidence: 99%

Leaving the Limits of Linearity for Light Microscopy

2020

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Nonlinear microscopy has enabled additional modalities for chemical contrast, deep penetration into biological tissues, and the ability to collect dynamics on ultrafast timescales across heterogeneous samples. The additional light fields introduced to a sample offer seemingly endless possibilities for variation to optimize and customize experimentation and the extraction of physical insight. This perspective highlights three areas of growth in this diverse field: the collection of information across multiple timescales, the selective imaging of interfacial chemistry, and the exploitation of quantum behavior for future imaging directions. Future innovations will leverage the work of the studies reviewed here as well as address the current challenges presented.

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Section: Intriguing Illuminationmentioning

confidence: 99%

Leaving the Limits of Linearity for Light Microscopy

2020

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“…Recently, the investigation on super-resolution longitudinally polarized optical needles has become a very hot research topic due to the potential application of optical needles in various fields, such as high-density optical data storage, super-resolution imaging, nanolithography, fluorescence imaging, particle capturing and so on [1][2][3][4][5][6][7][8][9][10][11]. By now, reversing electric dipole array radiation, vector beam wavefront modulation, paraxial spherical mirrors focusing and phase mask modulation were main methods for the generation of optical needles [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The generation of ultra-long longitudinally polarized optical needle with multi-belt complex phase filter

Liu,

Zhang,

et al. 2024

Phys. Scr.

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In the paper, a multi-belt complex phase filter was optimized by increasing the number of belts and changing phase and amplitude parameters of the filter. By focusing radially polarized sinh-Gaussian beams in single objective system with high-NA lens, longitudinal polarized optical needles were obtained with super-resolution in focal plane. And the super-resolution optical needle owned 36.6λ depth of focus and 0.42λ of full–width at half-maximum. The aspect ratio of the obtained optical needle was 87.14. The beam quality reached to 87.7%. The results demonstrated that the optimized multi-belt complex phase filter can lengthen depth of focus and compress transverse size simulta-neously. The obtained longitudinally polarization optical needles can be used in the fields of optical data storage, super-resolution imaging, particle trapping, nanolithogra-phy and so on.

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“…It is proposed that vectorial-field-modulated light is effective in generating a focal spot with an FWHM beyond the diffraction limit [17][18][19][20][21], which can be implemented into a confocal laser scanning microscopic (CLSM) configuration to achieve label-free superresolution imaging [22][23][24][25][26] and storage [27,28]. While researchers endeavor to narrow the focal spot, a fundamental question remains if the light may be blocked from entering the nanostructures medium no matter how small the interacting light field is, as the optical properties rather than the actual morphology of complex photonics or plasmonic structures do really support the concentrated excitations.…”

Section: Introductionmentioning

confidence: 99%

Far-Field and Non-Intrusive Optical Mapping of Nanoscale Structures

et al. 2022

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Far-field high-density optics storage and readout involve the interaction of a sub-100 nm beam profile laser to store and retrieve data with nanostructure media. Hence, understanding the light–matter interaction responding in the far-field in such a small scale is essential for effective optical information processing. We present a theoretical analysis and an experimental study for far-field and non-intrusive optical mapping of nanostructures. By a comprehensive analytical derivation for interaction between the modulated light and the target in a confocal laser scanning microscopy (CLSM) configuration, it is found that the CLSM probes the local density of states (LDOSs) in the far field rather than the sample geometric morphology. With a radially polarized (RP) light for illumination, the far-field mapping of LDOS at the optical resolution down to 74 nm is obtained. In addition, it is experimentally verified that the target morphology is mapped only when the far-field mapping of LDOS coincides with the geometric morphology, while light may be blocked from entering the nanostructures medium with weak or missing LDOS, hence invalidating high-density optical information storage and retrieval. In this scenario, nanosphere gaps as small as 33 nm are clearly observed. We further discuss the characterization for far-field and non-intrusive interaction with nanostructures of different geometric morphology and compare them with those obtainable with the projection of near-field LDOS and scanning electronic microscopic results.

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Imaging with a longitudinal electric field in confocal laser scanning microscopy to enhance spatial resolution

Cited by 18 publications

References 31 publications

Leaving the Limits of Linearity for Light Microscopy

Leaving the Limits of Linearity for Light Microscopy

The generation of ultra-long longitudinally polarized optical needle with multi-belt complex phase filter

Far-Field and Non-Intrusive Optical Mapping of Nanoscale Structures

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