2015
DOI: 10.1364/ol.40.000625
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Super-long photonic nanojet generated from liquid-filled hollow microcylinder

Abstract: Photonic nanojet (PNJ) from liquid-filled hollow microcylinder (LFHM) under a liquid immersion condition is numerically investigated based on the finite element method and physically analyzed with ray optics. Simulation and analysis results show that, by simultaneously introducing the immersed liquid and filled liquid, the propagation beam is greatly flattened, and super-long PNJs with decay length more than 100 times the illumination wavelengths are obtained in the outer near-field region of the LFHM. With th… Show more

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Cited by 70 publications
(36 citation statements)
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“…By varying the spatial shape of the micrometer scatters into non-spherical, non-symmetrical and composite structures, the key parameters of PNJs (length, width and light intensity) can be efficiently improved. Other changes in shape including core and hemispherical shell configurations 17, 18 , liquid-filled hollow microcylinders 19 , and more exotic structures, such as the binary spiral axicon and corrugated cylinder 20, 21 , are the other ways to manipulate the morphology of the PNJs. However, since the formed PNJs are initially restricted to the Ri upper bound, a slight outward extension will inevitably cause the PNJ converge more slowly, leading to increased FWHM, above the record of ~130 nm.…”
Section: Introductionmentioning
confidence: 99%
“…By varying the spatial shape of the micrometer scatters into non-spherical, non-symmetrical and composite structures, the key parameters of PNJs (length, width and light intensity) can be efficiently improved. Other changes in shape including core and hemispherical shell configurations 17, 18 , liquid-filled hollow microcylinders 19 , and more exotic structures, such as the binary spiral axicon and corrugated cylinder 20, 21 , are the other ways to manipulate the morphology of the PNJs. However, since the formed PNJs are initially restricted to the Ri upper bound, a slight outward extension will inevitably cause the PNJ converge more slowly, leading to increased FWHM, above the record of ~130 nm.…”
Section: Introductionmentioning
confidence: 99%
“…The question of obtaining the finest possible resolution has become the highlight of the study in progressive optics [1][2]. The super-focusing effects of photonic nanojets (PNJs) produced by a dielectric microsphere or microcylinder has emerges as a simple and effective way to achieve optical super-resolution [3][4][5][6][7][8][9][10][11][12][13][14][15]. The PNJ is a narrow high-intensity optical radiation flux formed in the proximity to the shadow surface of transparent dielectric nanoparticles.…”
Section: Introductionmentioning
confidence: 99%
“…The utilization of photonic nanojet is limited by the short effective length of photonic nanojet because the short effective length only allows photonic nanojet to interact with near surface objects. Hence, photonic nanojets generated by a composite inhomogeneous microsphere or microcylinder consisting of several concentric shells with different materials are reported [15][16][17][18][19][20]. The longitudinal and latitudinal dimensions of a photonic nanojet depending on the optical contrast variation of shells have been investigated.…”
Section: Introductionmentioning
confidence: 99%