Accession Number : AD1030442

Title :   High Efficiency Large-Angle Pancharatnam Phase Deflector Based on Dual Twist Design

Descriptive Note : Technical Report

Corporate Author : MIT Lincoln Laboratory Lexington United States

Personal Author(s) : Vornehm,Joseph ; Payson,Harold ; Berry,Shaun ; Finnemeyer,Valerie ; Roberts,Brian ; Gao,Kun ; McGinty,Colin ; Bos,Philip

Full Text :

Report Date : 16 Dec 2016

Pagination or Media Count : 9

Abstract : Pancharatnam made clear the concept of a phase-only device based on changes in the polarization state of light1. It was later shown that this concept could be used to make an optical device that could simulate a prism. We have previously shown through simulation that an optical beam deflector based on Pancharatnam phase can provide high efficiency with up to 80 deflection using a dual-twist structure for polarization state control2,3. In this report, we demonstrate that its optical performance is as predicted and far beyond what could be expected for a conventional diffractive optical device. We provide details about construction and characterization of a 40 beam steering device with 90% diffraction efficiency based on our dual-twist design at 633nm wavelength.

Descriptors :   polarization , deflectors , optical beam steering , thin films , angles

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE