University of California Santa Barbara has been
exploring the use of laser diodes (LDs) in combination with phosphors as a means to produce white light [Kristin A. Denault et al, AIP Advances, vol3, p072107, 2013]. Commercial ‘white’ light-emitting diodes (LEDs) generally use a blue or near-ultraviolet (near-UV) III-nitride LED to excite a phosphor target that converts the relatively narrow spectrum of the LED into something that approaches a white light spectrum of varying quality.
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