Adaptive Liquid Crystal Microlens Array Enabled By Two-Photon Polymerization

Abstract

A tunable-focus liquid crystal microlens array is demonstrated and characterized. Using two-photon polymerization based direct-laser writing, a polymerized microlens array is fabricated on one substrate. Such a microlens array creates inhomogeneous electric field distribution and homogeneous-like liquid-crystal alignment, simultaneously. The phase profile and thus the focal length can be tuned dynamically by the applied voltage. We also further investigate the focusing property and the imaging capability of the fabricated sample. Using the adaptive microlens array as an example, we demonstrate that directly forming a curvilinear surface with liquid-crystal alignment is feasible. In addition to adaptive lens, this direct-laser writing method is also a powerful tool for making other tunable photonic devices.

Publication Date

8-6-2018

Publication Title

Optics Express

Volume

26

Issue

16

Number of Pages

21184-21193

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OE.26.021184

Socpus ID

85051187979 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85051187979

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