@inproceedings{bc77af7fb66d45bdbb8b7969214d0423,
title = "Focused ion beam 3D nano-patterned optical fiber tips for advanced beam profile engineering",
abstract = "Focused ion beam (FIB) patterning of 3D topography on optical fiber tips for application in stand-alone, rugged and simplified setups for optical tweezers cell sorters, optical near-field lithography and optical beam profile engineering are reported. We demonstrate various configurations based on single-step FIB patterning, multiple-step FIB processing and hybrid approaches based on optical fiber pre- and post-FIB treatment with either etching, fusion splicing, photopolymerization or electroplating steps for optical fiber texture, topography and composition engineering. Different conductive coatings for minimal charge accumulation and beam drift are studied with the relative merits compared. Furthermore optimal beam parameters for accurate pattern replication and positioning are also presented. Measured experimental field profiles are compared with numerical simulations of fabricated optical fiber tips for fabrication accuracy evaluation. Applications employing these engineered fiber tips in the field of optical tweezers, optical vortex generation, photolithography, photo-polymerization and beam forming are presented.",
keywords = "Diffraction, fiber optics, Focused ion beam milling, Fresnel Zone Plate, Photon Sieve",
author = "Ricardo Janeiro and Raquel Flores and Ribeiro, {Ana R.} and Pedro Jorge and Jaime Viegas",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VIII ; Conference date: 08-02-2015 Through 11-02-2015",
year = "2015",
doi = "10.1117/12.2079143",
language = "British English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Schoenfeld, {Winston V.} and {von Freymann}, Georg and Rumpf, {Raymond C.}",
booktitle = "Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VIII",
address = "United States",
}