A highly efficient directional molecular white-light emitter driven by a continuous-wave laser diode

Nils W. Rosemann, Jens P. Eußner, Andreas Beyer, Stephan W Koch, Kerstin Volz, Stefanie Dehnen, Sangam Chatterjee

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40 Scopus citations

Abstract

Tailored light sources have greatly advanced technological and scientific progress by optimizing the emission spectrum or color and the emission characteristics. We demonstrate an efficient spectrally broadband and highly directional warm-white-light emitter based on a nonlinear process driven by a cheap, low-power continuous-wave infrared laser diode. The nonlinear medium is a specially designed amorphous material composed of symmetry-free, diamondoid-like cluster molecules that are readily obtained from ubiquitous resources. The visible part of the spectrum resembles the color of a tungsten-halogen lamp at 2900 kelvin while retaining the superior beam divergence of the driving laser. This approach of functionalizing energy-efficient state-of-the-art semiconductor lasers enables a technology complementary to light-emitting diodes for replacing incandescent white-light emitters in high-brilliance applications.

Original languageEnglish (US)
Pages (from-to)1301-1304
Number of pages4
JournalScience
Volume352
Issue number6291
DOIs
Publication statusPublished - Jun 10 2016
Externally publishedYes

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ASJC Scopus subject areas

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Cite this

Rosemann, N. W., Eußner, J. P., Beyer, A., Koch, S. W., Volz, K., Dehnen, S., & Chatterjee, S. (2016). A highly efficient directional molecular white-light emitter driven by a continuous-wave laser diode. Science, 352(6291), 1301-1304. https://doi.org/10.1126/science.aaf6138