The sulfur lamp is a highly efficient full-spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation.
S. Nayar, V. Branzoi, and T. Boult. Computer Vision and Pattern Recognition, 2004. CVPR 2004. Proceedings of the 2004 IEEE Computer Society Conference on, (27 June-2 July 2004)
X. Wu, R. Ehehalt, G. Razinskas, T. Feichtner, J. Qin, and B. Hecht. Nature Nanotechnology, (April 2022)<i style="font-style: normal;"><a href="https://rdcu.be/cLP6O">Shared Link</a><br><br><b>further coverage:</b><br> <a href="https://www.nature.com/articles/d41586-022-01132-0">Nature Research Highlight</a>, <a href="https://engineeringcommunity.nature.com/posts/light-driven-microdrones-a-new-level-of-optical-manipulation">Nature Community blog post</a></i>.