期刊
APPLIED OPTICS
卷 54, 期 4, 页码 796-801出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.54.000796
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资金
- Convocatoria Publica Programatica Area de Ciencias Exactas [CODI-256]
- Instituto Tecnologico Metropolitano (ITM) [13129-Convocatoria]
- CONICET [PIP 0549]
- UNLP
- Programa de Becas de Movilidad Academica from AUIP
- U de A
Experimental high-quality optical vortices of different topological charges are generated by using a vortex producing lens with two phase levels. In our setup, the lens is displayed on a liquid-crystal spatial light modulator that only attains phase modulation of around 1.2 pi. This achievement opens the real possibility of creating high-quality optical vortices with devices of very low phase modulation capacity. The experimental setup is fully described, and the considerations to set the optimal parameters to obtain high-quality optical vortices are discussed and experimentally established. The phase and intensity of the optical vortices are recovered. The phase is obtained through a phase-shifting method that is directly programmed onto the modulator avoiding any class of mechanical displacement. (C) 2015 Optical Society of America
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