Accession Number : AD1015194

Title :   Dynamic Control of Light Emission Faster than the Lifetime Limit Using VO2 Phase-Change

Descriptive Note : Journal Article

Corporate Author : Brown University Providence United States

Personal Author(s) : Cueff,Sebastien ; Li,Dongfang ; Zhou,You ; Wong,Franklin J ; Kurvits,Jonathan A ; Ramanathan,Shriram ; Zia,Rashid

Full Text :

Report Date : 22 Oct 2015

Pagination or Media Count : 6

Abstract : Modulation is a cornerstone of optical communication, and as such, governs the overall speed of data transmission. Currently, the two main strategies for modulating light are direct modulation of the excited emitter population (for example, using semiconductor lasers) and external optical modulation (for example, using MachZehnder interferometers or ring resonators). However, recent advances in nanophotonics offer an alternative approach to control spontaneous emission through modifications to the local density of optical states. Here, by leveraging the phase-change of a vanadium dioxide nanolayer, we demonstrate broadband all-optical direct modulation of 1.5 mm emission from trivalent erbium ions more than three orders of magnitude faster than their excited state lifetime. This proof-of-concept demonstration shows how integration with phase-change materials can transform widespread phosphorescent materials into high-speed optical sources that can be integrated in monolithic nanoscale devices for both free-space and on-chip communication.

Descriptors :   modulation , Optical communications , NANOPHOTONICS , PLASMONICS , optics , Optical communications , nanoscale devices , thin films , optoelectronic devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE