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Materials 2017, 10(10), 1166;

Laser-Based Lighting: Experimental Analysis and Perspectives

DEI—Department of Information Engineering—University of Padova, Via Gradenigo 6B, 35131 Padova, Italy
Author to whom correspondence should be addressed.
Received: 2 August 2017 / Revised: 4 October 2017 / Accepted: 5 October 2017 / Published: 11 October 2017
(This article belongs to the Special Issue Light Emitting Diodes and Laser Diodes: Materials and Devices)
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This paper presents an extensive analysis of the operating principles, theoretical background, advantages and limitations of laser-based lighting systems. In the first part of the paper we discuss the main advantages and issues of laser-based lighting, and present a comparison with conventional LED-lighting technology. In the second part of the paper, we present original experimental data on the stability and reliability of phosphor layers for laser lighting, based on high light-intensity and high-temperature degradation tests. In the third part of the paper (for the first time) we present a detailed comparison between three different solutions for laser lighting, based on (i) transmissive phosphor layers; (ii) a reflective/angled phosphor layer; and (iii) a parabolic reflector, by discussing the advantages and drawbacks of each approach. The results presented within this paper can be used as a guideline for the development of advanced lighting systems based on laser diodes. View Full-Text
Keywords: laser diode; lighting; photoluminescence; remote phosphors laser diode; lighting; photoluminescence; remote phosphors

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Trivellin, N.; Yushchenko, M.; Buffolo, M.; De Santi, C.; Meneghini, M.; Meneghesso, G.; Zanoni, E. Laser-Based Lighting: Experimental Analysis and Perspectives. Materials 2017, 10, 1166.

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