Acta Optica Sinica, Volume. 34, Issue 11, 1109001(2014)
Power-Exponent-Phase Vortices for Manipulating Particles
An approach of manipulating micro-particles based on the theory of power-exponent-phase vortices (PEPV) is demonstrated experimentally. Phase holograms are generated to produce PEPVs with different topological charges and exponential powers. The holograms are displayed sequentially on a spatial light modulator (SLM) for modulating the incident laser beam. The modulated light beam is Fourier transformed by a lens, and then filtered by a pinhole. The selected diffraction order of the beam is focused on the sample stage of an inverted optical microscope. The experimental results verify that the PEPV beam can be used to optically transport micron-sized particles directionally. The beam is found to possess a unique function in the transportation and collection of micro-particles, and can have extensive practical applications in many fields.
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Luo Wei, Cheng Shubo, Yuan Zhanzhong, Tao Shaohua. Power-Exponent-Phase Vortices for Manipulating Particles[J]. Acta Optica Sinica, 2014, 34(11): 1109001
Category: Holography
Received: Jun. 27, 2014
Accepted: --
Published Online: Sep. 18, 2014
The Author Email: Wei Luo (464342094@qq.com)