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Title: Optical fiber antenna generating spiral beam shapes

Abstract

A simple method is proposed here to generate vortex beam and spiral intensity patterns from a Gaussian source. It uses a special type of optical fiber antenna of aperture ∼80 nm having naturally grown surface curvature along its length. The antenna converts linearly polarized Gaussian beam into a beam with spiral intensity patterns. The experimentally obtained spiral patterns with single and double spiral arms manifest the orbital angular momentum, l = ±1, 2, carried by the output beam. Such beam can be very useful for optical tweezer, metal machining, and similar applications.

Authors:
; ; ; ;  [1];  [2]
  1. CSIR-Central Scientific Instruments Organization, Sector-30, Chandigarh 160030 (India)
  2. Banwarilal Bhalotia College, Asansol, West Bengal 713303 (India)
Publication Date:
OSTI Identifier:
22280716
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTENNAS; APERTURES; GAUSS FUNCTION; GAUSSIAN PROCESSES; MACHINING; OPTICAL FIBERS; ORBITAL ANGULAR MOMENTUM; SURFACES; VORTICES

Citation Formats

Sarkar Pal, S., Mondal, S. K., E-mail: samirmondal01@gmail.com, Kumar, R., Akula, A., Ghosh, R., Bhatnagar, R., and Kumbhakar, D. Optical fiber antenna generating spiral beam shapes. United States: N. p., 2014. Web. doi:10.1063/1.4862884.
Sarkar Pal, S., Mondal, S. K., E-mail: samirmondal01@gmail.com, Kumar, R., Akula, A., Ghosh, R., Bhatnagar, R., & Kumbhakar, D. Optical fiber antenna generating spiral beam shapes. United States. https://doi.org/10.1063/1.4862884
Sarkar Pal, S., Mondal, S. K., E-mail: samirmondal01@gmail.com, Kumar, R., Akula, A., Ghosh, R., Bhatnagar, R., and Kumbhakar, D. 2014. "Optical fiber antenna generating spiral beam shapes". United States. https://doi.org/10.1063/1.4862884.
@article{osti_22280716,
title = {Optical fiber antenna generating spiral beam shapes},
author = {Sarkar Pal, S. and Mondal, S. K., E-mail: samirmondal01@gmail.com and Kumar, R. and Akula, A. and Ghosh, R. and Bhatnagar, R. and Kumbhakar, D.},
abstractNote = {A simple method is proposed here to generate vortex beam and spiral intensity patterns from a Gaussian source. It uses a special type of optical fiber antenna of aperture ∼80 nm having naturally grown surface curvature along its length. The antenna converts linearly polarized Gaussian beam into a beam with spiral intensity patterns. The experimentally obtained spiral patterns with single and double spiral arms manifest the orbital angular momentum, l = ±1, 2, carried by the output beam. Such beam can be very useful for optical tweezer, metal machining, and similar applications.},
doi = {10.1063/1.4862884},
url = {https://www.osti.gov/biblio/22280716}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 3,
volume = 104,
place = {United States},
year = {Mon Jan 20 00:00:00 EST 2014},
month = {Mon Jan 20 00:00:00 EST 2014}
}