Metasurfaces with controlled angular phase dispersion (Conference Presentation)

Seyedeh Mahsa Kamali; Ehsan Arbabi; Amir Arbabi; Yu Horie; Andrei Faraon

doi:10.1117/12.2255547

28 April 2017 Metasurfaces with controlled angular phase dispersion (Conference Presentation)

Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi, Yu Horie, Andrei Faraon

Proceedings Volume 10113, High Contrast Metastructures VI; 101130Q (2017) https://doi.org/10.1117/12.2255547
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Metasurfaces are two-dimensional arrangements of nano-scatterers that enable control of phase, amplitude, and polarization of light with high efficiency and subwavelength resolution. They have enabled diffractive optical elements with enhanced functionalities and performance. Nevertheless, metasurface diffractive optical elements share many of the properties of regular diffractive optical elements. One of these properties is the response of diffractive elements to changing the angle of illumination: if the beam incident on a grating is rotated by an angle, all diffraction orders will rotate by corresponding angles in the same direction. More precisely, because of the constant grating momentum, the change in the sine of all diffraction angles will be equal to the change in the sine of the illumination angle. Many optical devices of interest, however, do not require this type of behavior, which makes their implementation using metasurfaces very challenging. For instance retroreflectors, which reflect light incident from any angle to the same direction, or collimators, that deflect light coming from any angle to a single given direction, do not follow the regular diffractive optics angular response. We investigate properties of single-layer metasurfaces that enable devices like retroreflectors and collimators. We show that such metasurfaces should have the ability to control the phase, as well as the derivative of phase with respect to angle. We demonstrate designs that provide such control, and use them to show devices that defy the regular response of diffractive optical devices to changes in the illumination angle.

Conference Presentation

Citation Download Citation

Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi, Yu Horie, and Andrei Faraon "Metasurfaces with controlled angular phase dispersion (Conference Presentation)", Proc. SPIE 10113, High Contrast Metastructures VI, 101130Q (28 April 2017); https://doi.org/10.1117/12.2255547

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

Diffractive optical elements

Collimators

Diffraction

Diffraction gratings

Optical components

Retroreflectors

Control systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years