LED pumped luminescent concentrators: a new opportunity for low cost solid-state lasers

Abstract

We demonstrate that a LED-pumped Ce:YAG luminescent concentrator (LC) can increase the irradiance of blue LEDs by a factor of 10 with an optical efficiency of 25%, making them much more suitable to pump solid-state lasers. In our demonstration, we used 100 Hz pulsed LEDs emitting 190 W/cm2 at 430 nm to illuminate a Ce:YAG LC, leading to an output irradiance… (More)

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