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Wavelength-scalable micro-fabricated wedge for generation of optical vortex beam in optical manipulation |
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| Authors: | X-C Yuan BPS Ahluwalia SH Tao WC Cheong LS Zhang J Lin J Bu RE Burge |
| Institution: | (1) Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore, Singapore;(2) Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE, UK |
| Abstract: | An optical wedge phase plate is fabricated for the study of vortex beam generation in optical manipulation. It is demonstrated that the wedge phase element provides scalability for generating the vortex beam at different wavelengths as long as the incident beam size is adjusted accordingly. The presence of singularity for different wavelengths and the associated orbital angular momentum are confirmed experimentally in optical manipulation. Electronic supplementary material Supplementary material is available in the online version of this article at and is accessible for authorized users. PACS 41.85.Ct; 42.82.Cr |
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