期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 28, 期 21, 页码 2299-2302出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2591238
关键词
Femtosecond laser; hybrid refractive-diffractive; optical vortex; microlens
资金
- National Natural Science Foundation of China [61137001, 91423102, 91323301, 61590930, 61435005]
We report a novel hybrid refractive-diffractive microlens combined with spiral phase for the generation of optical vortex, which is fabricated via femtosecond laser direct writing technology. The unique optical performance of focusing capability is demonstrated. At the focus position, the hollow focus with different integer topological charges is investigated. Moreover, experimental results are supported by finite-element calculation. The novel microlens generating an optical vortex will fulfill important applications in optical manipulation, multistate information encoding, quantum communication, and computation, particularly in the compaction, integration, and simplification of optical vortex generation system.
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