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 : https://apps.dtic.mil/dtic/tr/fulltext/u2/1030442.pdf


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