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Square-shaped beam generated by phase shifted bounded square zone plate (http://rdcu.be/vRVb)

Authors:
Arash Sabatyan at Urmia University
Arash Sabatyan
Seyyed Mojtaba Taheri at Urmia University
Seyyed Mojtaba Taheri
Mortaza Taheri at Urmia University
Mortaza Taheri
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Abstract and Figures

A novel diffractive element is presented which is made through lateral phase shifted square zone plate bounded along horizontal and vertical axes via two perpendicular rectangle windows, respectively. We demonstrate that \textcolor{red}{under a given condition} the element is able to produce a square light beam at the focal plane. We have also elaborated that the produced square beam can be simply manipulated by an appropriate combination of the phase shifting parameter and bounded width. Experimental works verify the simulation results.
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Square-shaped beam generated by phase shifted bounded
square zone plate
Arash Sabatyan
1
•Seyyed Mojtaba Taheri Balanoji
1
•
Seyyed Mortaza Taheri Balanoji
1
Received: 9 June 2017 / Accepted: 12 September 2017 / Published online: 14 September 2017
ÓSpringer Science+Business Media, LLC 2017
Abstract A novel diffractive element is presented which is made through lateral phase
shifted square zone plate bounded along horizontal and vertical axes via two perpendicular
rectangle windows, respectively. We demonstrate that under a given condition the element
is able to produce a square light beam at the focal plane. We have also elaborated that the
produced square beam can be simply manipulated by an appropriate combination of the
phase shifting parameter and bounded width. Experimental works verify the simulation
results.
Keywords Diffractive element Diffractive lens Fresnel zone plate Laser
beam shaping
1 Introduction
Fresnel zone plate (FZP) as a well known diffractive lens plays an important role in science
and technology. It has a circularly symmetric structure that contains a wide range of spatial
frequencies and acts as a multi-focus lens. It has many glamor aspects of applications of
focusing, imaging, metrology as well as beam shaping (Soifer 2013; Duparre et al. 1995;
Kirz 1974; Wang et al. 2003; Joo et al. 2002; Schmahl and Rudolph 1969; Hyde 1999). It
has also found a large number of new applications in many different areas, covering the
whole electromagnetic spectrum from X-ray microscopy to THZ imaging (Sakdinawat and
Liu 2007; Wang and Zhang 2002; Siemion et al. 2012). Nowadays, FZP-based elements
are generated in various shapes circular, square, rectangle, cross-like and so on (Cuadrado
et al. 1987; Mihailescua et al. 2008; Tao et al. 2006; Minin et al. 2007; Alda and Boreman
2008; Alda et al. 2009; Sabatyan and Rafighdoost 2015; Vijayakumar et al. 2017; Minin
and Minin 2004) for a variety of applications such as beam shaping, optical vortices, array
&Arash Sabatyan
a.sabatyan@urmia.ac.ir
1
Physics Department, Faculty of sciences, Urmia University, Urmia, Iran
123
Opt Quant Electron (2017) 49:325
DOI 10.1007/s11082-017-1160-y
Content courtesy of Springer Nature, terms of use apply. Rights reserved.
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