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http://hdl.handle.net/2445/124669
Title: | Synthesis of light needles with tunable length and nearly constant irradiance |
Author: | Martínez-Herrero, Rosario Maluenda Niubó, David Juvells Prades, Ignacio Carnicer González, Arturo |
Keywords: | Polarització (Llum) Difracció Feixos de làser Polarization (Light) Diffraction Laser beams |
Issue Date: | 8-Feb-2018 |
Publisher: | Nature Publishing Group |
Abstract: | We introduce a new method for producing optical needles with tunable length and almost constant irradiance based on the evaluation of the on-axis power content of the light distribution at the focal area. According to theoretical considerations, we propose an adaptive modulating continuous function that presents a large derivative and a zero value jump at the entrance pupil of the focusing system. This distribution is displayed on liquid crystal devices using holographic techniques. In this way, a polarized input beam is shaped and subsequently focused using a high numerical aperture (NA) objective lens. As a result, needles with variable length and nearly constant irradiance are produced using conventional optics components. This procedure is experimentally demonstrated obtaining a 53λ-long and 0.8λ-wide needle. |
Note: | Reproducció del document publicat a: https://doi.org/10.1038/s41598-018-21007-7 |
It is part of: | Scientific Reports, 2018, vol. 8, num. 1, p. 2657 |
URI: | http://hdl.handle.net/2445/124669 |
Related resource: | https://doi.org/10.1038/s41598-018-21007-7 |
ISSN: | 2045-2322 |
Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
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File | Description | Size | Format | |
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681862.pdf | 3.9 MB | Adobe PDF | View/Open |
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