Submicrosecond Electric Switching of Large Birefringence in the Isotropic Phase of Ferroelectric Nematics

IF 7.2 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Kamal Thapa, Sathyanarayana Paladugu, Oleg D. Lavrentovich
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引用次数: 0

Abstract

Conventional nonpolar nematic liquid crystals, widely known for their successful display applications, are not well suited for fast electro-optical switching because of the slow (milliseconds) field-off relaxation of the director. In this work, sub-microsecond field-on and field-off switching of a large birefringence (≈0.1) is demonstrated by applying a moderate electric field (30−100) Vµm−1, to an isotropic film of a ferroelectric nematic material. This highly efficient electro-optical switching is rooted in the recently discovered field-induced isotropic to ferroelectric nematic phase transition. The demonstrated sub-microsecond switching of ferroelectric birefringence induced by field (FBIF) has the potential for applications in fast-switching electro-optic devices, such as phase modulators, light shutters, beam steerers, switchable optical compensators.

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铁电向列相中各向同性大双折射的亚微秒电开关
传统的非极性向列液晶以其成功的显示应用而闻名,但由于导向器的场差弛豫缓慢(毫秒级),因此不适合快速电光开关。在这项工作中,通过对铁电向列材料的各向同性薄膜施加中等电场(30−100)Vµm−1,证明了大双折射(≈0.1)的亚微秒场开和场关开关。这种高效的电光开关植根于最近发现的场致各向同性到铁电向列相转变。所演示的场诱导铁电双折射的亚微秒开关在快速开关电光器件中具有应用潜力,如相位调制器、百叶窗、光束转向器、可切换光补偿器等。
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来源期刊
Advanced Optical Materials
Advanced Optical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS
CiteScore
13.70
自引率
6.70%
发文量
883
审稿时长
1.5 months
期刊介绍: Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.
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