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Abstract:
A subwavelength metal grating is designed to generate axially symmetric polarized beams (ASPBs) in the visible region, and a simulation based on the rigid coupled wave algorithm (RCWA) is performed to optimize the grating. The ring-shaped grating is manufactured by electron beam lithography (EBL), nanometer-imprint and plasma etching technologies. An azimuthally polarized beam is obtained with the grating under the 632.8nm He-Ne laser radiation, which can be transferred to a radially polarized beam or other ASPBs with wave plates. Based on the broad band feature of the grating, this method is practical and reliable in realizing ASPBs. © 2013 The Japan Society of Applied Physics.
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Applied Physics Express
ISSN: 1882-0778
Year: 2013
Issue: 3
Volume: 6
2 . 5 6 7
JCR@2013
2 . 3 0 0
JCR@2023
JCR Journal Grade:1
CAS Journal Grade:2
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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