Micro-patterned liquid crystal Pancharatnam–Berry axilens

Jiarui Ren; Weichang Wang; Weiqiang Yang; Conglong Yuan; Kang Zhou; Xiao Li; Alwin Mingwai Tam; Cuiling Meng; Jiatong Sun; Vladimir G. Chigrinov; Hoising Kwok; Xiaoqian Wang; Zhigang Zheng; Dong Shen

doi:10.3788/COL201816.062301

Journals >Chinese Optics Letters >Volume 16 >Issue 6 >Page 062301 > Article

Chinese Optics Letters
Vol. 16, Issue 6, 062301 (2018)

Micro-patterned liquid crystal Pancharatnam–Berry axilens

Jiarui Ren¹, Weichang Wang¹, Weiqiang Yang¹, Conglong Yuan¹, Kang Zhou¹, Xiao Li¹, Alwin Mingwai Tam^1、2、4, Cuiling Meng², Jiatong Sun³, Vladimir G. Chigrinov², Hoising Kwok², Xiaoqian Wang^1、*, Zhigang Zheng¹, and Dong Shen¹

Author Affiliations

¹Physics Department, East China University of Science and Technology, Shanghai 200237, China

²ECE Department, Hong Kong University of Science and Technology, Hong Kong 999077, China

³College of Information Science and Technology, Donghua University, Shanghai 201620, China

⁴E-mail: amwtam@ust.hk

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DOI: 10.3788/COL201816.062301 Cite this Article Set citation alerts

Jiarui Ren, Weichang Wang, Weiqiang Yang, Conglong Yuan, Kang Zhou, Xiao Li, Alwin Mingwai Tam, Cuiling Meng, Jiatong Sun, Vladimir G. Chigrinov, Hoising Kwok, Xiaoqian Wang, Zhigang Zheng, Dong Shen. Micro-patterned liquid crystal Pancharatnam–Berry axilens[J]. Chinese Optics Letters, 2018, 16(6): 062301 Copy Citation Text

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Abstract

A liquid crystal Pancharatnam–Berry (PB) axilens is proposed and fabricated via a digital micro-mirror-device-based photo-patterning system. The polarization-dependent device behaves as an axilens for a left-handed circularly polarized incident beam, for which an optical ring is focused with a long focal depth in the transverse direction at the output, and an anti-axilens for a right-handed circularly polarized incident beam, for which an optical ring gradually expands at the output. The modification of the size and the sharpness of the diffracted ring beam is demonstrated by encoding a positive (negative) PB lens term into the director expression of a PB (anti-)axicon.