Phosphor-converted warm white laser diodes with high saturation threshold through a PiGF-dual sapphire converter

Phosphor-converted warm white LDs with phosphor-in-glass film-dual sapphire (PiGF-D) converter were proposed. The Y/R-PiGF-D based white LD achieves a warm white light with a CRI of 87.5 and a high LF of 2010 lm@31.7 W mm −2 .