Direct patterning of vortex generators on a fiber tip using a focused ion beam

The realization of spiral phase optical elements on the cleaved end of an optical fiber by focused ion beam milling is presented. A focused Ga ion beam with an acceleration voltage of 30 keV is used to etch continuous spiral phase plates and fork gratings directly on the tip of the fiber. The phase...

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Veröffentlicht in:Optics letters 2016-05, Vol.41 (10), p.2133-2136
Hauptverfasser: Vayalamkuzhi, Pramitha, Bhattacharya, Shanti, Eigenthaler, Ulrike, Keskinbora, Kahraman, Samlan, C T, Hirscher, Michael, Spatz, Joachim P, Viswanathan, Nirmal K
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container_end_page 2136
container_issue 10
container_start_page 2133
container_title Optics letters
container_volume 41
creator Vayalamkuzhi, Pramitha
Bhattacharya, Shanti
Eigenthaler, Ulrike
Keskinbora, Kahraman
Samlan, C T
Hirscher, Michael
Spatz, Joachim P
Viswanathan, Nirmal K
description The realization of spiral phase optical elements on the cleaved end of an optical fiber by focused ion beam milling is presented. A focused Ga ion beam with an acceleration voltage of 30 keV is used to etch continuous spiral phase plates and fork gratings directly on the tip of the fiber. The phase characteristics of the output beam generated by the fabricated structures measured via an interference experiment confirmed the presence of phase singularity in the output beam. The devices are expected to be promising candidates for all-fiber beam shaping and optical trapping applications.
doi_str_mv 10.1364/OL.41.002133
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source Optica Publishing Group Journals
subjects Acceleration
Beams (radiation)
Continuous fibers
Devices
Fibers
Gratings (spectra)
Ion beams
Spirals
title Direct patterning of vortex generators on a fiber tip using a focused ion beam
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