Volume 7, Issue 2 (International Journal of Optics and Photonics (IJOP) Vol 7, No 2, Summer-Fall 2013)                   IJOP 2013, 7(2): 77-83 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Rasouli S, Yeganeh M. Use of a Two-Channel Moiré Wavefront Sensor for Measuring Topological Charge Sign of the Vortex Beam and Investigation of Its Change Due to an Odd Number of Reflections. IJOP 2013; 7 (2) :77-83
URL: http://ijop.ir/article-1-166-en.html
1- Institute for Advanced Studies in Basic Sciences (IASBS)
Abstract:   (8599 Views)
One of the solutions of the Helmholtz equation is the vortex beams. In the recent decades, production and applications of these types of beams have found serious attentions. Determination of the vortex beam topological charge and its sign are very important issues. Odd number of reflections of the vortex beam changes its vorticity. In this paper, we have used a q-plate to generate a vortex beam from a plane wave of a He-Ne laser beam and a two-channel moiré based wavefront sensor is used to measure wavefront gradient of the vortex beam. In two different arrangements the vortex beam experience odd and even number of reflections, respectively, and from the moiré pattern deformations the topological charge of the vortex beam and its sign are determined.
Full-Text [PDF 456 kb]   (3777 Downloads)    
Type of Study: Research | Subject: General
Received: 2014/05/14 | Revised: 2015/02/24 | Accepted: 2014/06/12 | Published: 2014/08/14

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | International Journal of Optics and Photonics

Designed & Developed by : Yektaweb