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A fully planar solar pumped laser based on a luminescent solar collector

Masuda, Taizo; Iyoda, Mitsuhiro; Yasumatsu, Yuta; Dottermusch, Stephan; Howard, Ian A.; Richards, Bryce S.; Bisson, Jean-Francois; Endo, Masamori

Abstract (englisch):
A solar-pumped laser (SPL) that converts sunlight directly into a coherent and intense laser beam generally requires a large concentrating lens and precise solar tracking, thereby limiting its potential utility. Here, we demonstrate a fully-planar SPL without a lens or solar tracking. A Nd3+-doped silica fiber is coiled into a cylindrical chamber filled with a sensitizer solution, which acts as a luminescent solar collector. The body of the chamber is highly reflective while the top window is a dichroic mirror that transmits incoming sunlight and traps the fluorescence emitted by the sensitizer. The laser-oscillation threshold was reached at a natural sunlight illumination of 60% on the top window. Calculations indicated that a solar-to-laser power-conversion efficiency could eventually reach 8%. Such an SPL has potential applications in long-term renewable-energy storage or decentralised power supplies for electric vehicles and Internet-of-Things devices.

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Verlagsausgabe §
DOI: 10.5445/IR/1000117985
Veröffentlicht am 01.04.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2020
Sprache Englisch
Identifikator ISSN: 2399-3650
KITopen-ID: 1000117985
Erschienen in Communications Physics
Band 3
Heft 1
Seiten Article No. 60
Vorab online veröffentlicht am 27.03.2020
Nachgewiesen in Web of Science
Scopus
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