Mondal, S.K. and Pal, S.S. and Kapur, Pawan (2012) Optical fiber nano-tip and 3D bottle beam as non-plasmonic optical tweezers. Optics Express, 20 (15). pp. 16180-16185. ISSN 1094-4087
PDF
Optical-20-15-16180.pdf - Published Version Restricted to Registered users only Download (2220Kb) |
Abstract
We report a simple fiber nano-tip as non-plasmonic optical tweezer, which can manipulate submicron particles in a non-contact manner. The efficiency of an optical tweezer can be enhanced by using nondiffracting type optical beams such as Bessel beam or self-imaged Bessel beam (3D bottle beam). The present work, for the first time, realizes a nonplasmonic optical tweezer based on a miniaturized axicon like single-mode optical fiber nano-tip. The tip generates non-diffracting type 3D bottle beam by virtue of its changing wedge angle. The nano-tip is prepared from a photosensitive single-mode optical fiber by employing a novel chemical etching technique. We experimentally demonstrate trapping of ~60 nm silver particle and ~160 nm silica particle using this nano-tip optical tweezer. The nano-tweezer also succeeds to pick up the particles from aqueous solution. The proposed nano-tweezer working at smaller laser powers opens new avenues for nanomanipulation and analysis of submicroscale specimens in the biological and physical sciences.
Item Type: | Article |
---|---|
Subjects: | CSIO > Optics CSIO > Photonics Instrumentation |
Divisions: | Photonics Instrumentation |
Depositing User: | Ms. J Shrivastav |
Date Deposited: | 25 Feb 2013 06:20 |
Last Modified: | 25 Feb 2013 06:20 |
URI: | http://csioir.csio.res.in/id/eprint/343 |
Actions (login required)
View Item |