• • KSF:Mn-PGC and β-SiAlON:Eu-PGC achieve internal quantum efficiencies of 94.6% and 87.8%, respectively, enabling high-efficiency color conversion critical for reducing laser power requirements and thermal load in LPD systems.
• • The KSF:Mn-PGC wheel delivers 684 lm and 21 lm W−1 mm−1, while the β-SiAlON:Eu-PGC wheel reaches 4770 lm and 172 lm W−1 mm−1, demonstrating superior luminous flux and efficacy that meet cinema-level projection brightness thresholds (>2000 lm) where LED technology fails.
• • The patterned phosphor wheel covers 125% of the Rec. 709 color gamut, exceeding the 103% coverage of YAG:Ce-based sources by 22 percentage points, which directly addresses the wide-gamut requirement for immersive AR/VR and high-fidelity displays.
• • Silicone-encapsulated phosphors exhibit >40% quantum efficiency drop under 6 W mm−2 laser irradiation, whereas the PGCs mitigate thermal accumulation and structural failure, providing a pathway for reliable operation under high-power laser densities (>10 W mm−2) essential for long-lifetime projection systems.