Liquid-crystal tunable metasurfaces for phase modulation and beam deflection (Conference Presentation)

Andrei Komar; Zheng Fang; Isabelle Staude; Manuel Decker; Andrey E. Miroshnichenko; Justus Bohn; Ramon Paniagua Dominguez; Ye Feng Yu; Arseniy I. Kuznetsov; Yuri S. Kivshar; Dragomir N. Neshev

doi:10.1117/12.2251767

28 April 2017 Liquid-crystal tunable metasurfaces for phase modulation and beam deflection (Conference Presentation)

Andrei Komar, Zheng Fang, Isabelle Staude, Manuel Decker, Andrey E. Miroshnichenko, Justus Bohn, Ramon Paniagua Dominguez, Ye Feng Yu, Arseniy I. Kuznetsov, Yuri S. Kivshar, Dragomir N. Neshev

Author Affiliations +

Proceedings Volume 10113, High Contrast Metastructures VI; 1011316 (2017) https://doi.org/10.1117/12.2251767
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

All-dielectric optical metasurfaces represent a new platform that is able to change electromagnetic field dramatically, while having thickness much smaller than the optical wavelength. The properties of metasurface depends critically on the geometry of its nanostructuring, therefore they are pre-set during the fabrication process. However, a number of practical application of such metasurfaces requires the dynamic change of their properties with operation. Embedding the metasurface in LC we can offer unique opportunities for such tuning and control of their properties. Here we show that by applying voltage across the LC or by varying its temperature we are able to control the spectral position of the metasurface’s electric and magnetic resonances. Using this method, we demonstrate experimentally the tuning of the properties of homogeneous metasurface consisted from array of equal elements as well as switch on and off different metasurface devices that use nanostructures with gradient geometries. In particular, we show that applying voltage across the LC cell (one substrate of which is a Si disk metasurface), we can change the spectral position of electric and magnetic resonances thus changing intensity and phase of transmitted electromagnetic wave. To demonstrate possibility of thermal controlling of metasurface with special geometry, we further utilize gradient metasurface that deflect light beams. By heating the LC to the critical temperature we can switch the transmitted beam from straight propagation to angular deflection. Overall, by combining developed LC technologies with the emerging field of nanostructured metasurfaces we show the potential for novel ultra-thin tunable optical devices.

Conference Presentation

Citation Download Citation

Andrei Komar, Zheng Fang, Isabelle Staude, Manuel Decker, Andrey E. Miroshnichenko, Justus Bohn, Ramon Paniagua Dominguez, Ye Feng Yu, Arseniy I. Kuznetsov, Yuri S. Kivshar, and Dragomir N. Neshev "Liquid-crystal tunable metasurfaces for phase modulation and beam deflection (Conference Presentation)", Proc. SPIE 10113, High Contrast Metastructures VI, 1011316 (28 April 2017); https://doi.org/10.1117/12.2251767

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Liquid crystals

Magnetism

Nanostructuring

Phase modulation

Switches

Electromagnetic radiation

Electromagnetism

Show All Keywords

Keywords/Phrases

Search In:

Publication Years