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Open AccessArticle

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.
Materials 2017, 10(10), 1166;
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)
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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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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