Acta Photonica Sinica, Volume. 46, Issue 11, 1114001(2017)
Generating Long-Distance Nondiffracting Bessel Beams with Liquid-immersion Composite-Axicon
A composite axicon is presented, which consists of a positive axicon and a negative axicon immersed in index-matching liquid. Analysis results show that it is equivalent to conventional positive axicon, and can be used to generate long-distance nondiffracting Bessel beam.The maximum distance without diffraction depends on not only the refractive index of axicons and index-matching liquid, but also the cut angle of axicons. Therefore, it is a flexible method which not only increases the selection of element material, but also reduces the difficulties of element processing.
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LIU Liang, HUANG Xiu-jun, XU Hong-yan, SONG Zhen-jiang, SHI De-le, WANG Shan-shan. Generating Long-Distance Nondiffracting Bessel Beams with Liquid-immersion Composite-Axicon[J]. Acta Photonica Sinica, 2017, 46(11): 1114001
Received: May. 11, 2017
Accepted: --
Published Online: Dec. 8, 2017
The Author Email: Liang LIU (ll06b@126.com)