| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Effect of Coma Aberration on Orbital Angular Momentum Spectrum of Vortex Beams |
| CHEN Zi-Yang, PU Ji-Xiong |
| Department of Electronic Science and Technology, Huaqiao University, Quanzhou 362021 |
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| Cite this article: |
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CHEN Zi-Yang, PU Ji-Xiong 2009 Chin. Phys. Lett. 26 034202 |
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Abstract Spiral spectra of vortex beams with coma aberration are studied. It is shown that the orbital angular momentum (OAM) states of vortex beams with coma aberration are different from those aberration-free vortex beams. Spiral spectra of beams with coma aberration are spreading. It is found that in the presence of coma aberration, the vortex beams contain not only the original OAM component but also other components. A larger coma aberration coefficient and/or a larger beam waist will lead to a wider spreading of the spiral spectrum. The results may have potential applications in information encoding and transmittance.
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| Keywords:
42.15.Fr
42.50.Tx
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Received: 07 March 2008
Published: 19 February 2009
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| PACS: |
42.15.Fr
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(Aberrations)
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42.50.Tx
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(Optical angular momentum and its quantum aspects)
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