Published in

Optica, Optics Letters, 8(40), p. 1643, 2015

DOI: 10.1364/ol.40.001643

Links

Tools

Export citation

Search in Google Scholar

Micro-patterned photo-aligned ferroelectric liquid crystal Fresnel zone lens

Journal article published in 2015 by A. K. Srivastava, X. Q. Wang, S. Q. Gong, D. Shen, Y. Q. Lu, V. G. Chigrinov, H. S. Kwok
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

In this Letter, we disclose a fast switchable Fresnel zone lens (FZL) by confining the ferroelectric liquid crystals (FLCs) in multiple microscopically defined photo-aligned alignment domains. The photo-alignment (PA) offers good control on the anchoring energy (W) by mean of irradiation doses (ID) and thus excellent alignment for FLCs. Two operational modes of the FLCFZL, i.e., FOCUS/OFF and FOCUS/DEFOCUS, were demonstrated. The proposed diffracting element provides fast response time, high diffraction efficiency (η), with saturated electro-optical (EO) operations up to high frequency (≈2 kHz). Thus, the proposed FLCFZLs with simple fabrication open several opportunities to improve the quality of existing devices and to find new applications.