Abstract

The Arago–Poisson spot played an important role in the discovery of the wave nature of light. We demonstrate a novel way to shape the Arago–Poisson spot by partially twisting the phase fronts of the incident light beam. We use a spatial light modulator to generate the holographic gratings both for mimicking the circular opaque objects and for modulating the spiral phase profiles. For incomplete spiral phase of five- and tenfold symmetry, we observe the gradual formation of the on-axis bright spots upon propagation. Our results show that two fundamental but seemingly independent optical phenomena, namely, the Arago–Poisson spot and the orbital angular momentum (OAM) of light, can be well connected by changing the phase height ϑ gradually from 0 to 2π. The experimental results are well interpreted visually by plotting the Poynting vector flows. In addition, based on the decomposed OAM spectra, the observations can also be understood from the controllable mixture of a fundamental Gaussian beam and an OAM beam. Our work is an elegant demonstration that spiral phase modulation can add to the optical tool to effectively shape the diffraction of light and may have potential applications in the field of optical manipulations.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
The dark spots of Arago

Pascal Fischer, Susan E. Skelton, Christopher G. Leburn, Casey T. Streuber, Ewan M. Wright, and Kishan Dholakia
Opt. Express 15(19) 11860-11873 (2007)

Optical vortex beam shaping by use of highly efficient irregular spiral phase plates for optical micromanipulation

W. M. Lee, X.-C. Yuan, and W. C. Cheong
Opt. Lett. 29(15) 1796-1798 (2004)

Optical twists in phase and amplitude

Vincent R. Daria, Darwin Z. Palima, and Jesper Glückstad
Opt. Express 19(2) 476-481 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Supplementary Material (4)

NameDescription
» Visualization 1: AVI (970 KB)      Numerical simulation part 1.
» Visualization 2: AVI (780 KB)      Numerical simulation part 2.
» Visualization 3: AVI (6239 KB)      Numerical simulation part 3.
» Visualization 4: AVI (9600 KB)      Numerical simulation part 4.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription