TY - JOUR AB - A luminescent concentrator functioning as a bright source of yellow light is reported. It comprises a waveguide made of cerium-doped YAG crystal, in the form of a long-thin rectangular strip, surrounded by flowing air and optically pumped from both sides with blue light from arrays of high-efficiency InGaN LEDs. Phosphor-converted yellow light, generated within the strip, is guided to a glass taper that is butt-coupled to one of the strip’s end faces. Up to 20 W of optical power, centered on 575 nm with a linewidth of 76 nm, can be continuously radiated into air from the taper’s 1.67 mm × 1.67 mm square output aperture. The intensity of the outputted light is significantly greater than what any yellow (AlGaInP) LED can directly produce (either singly or arrayed), with only a modest increase in linewidth. Furthermore, the wall-plug efficiency of the source exceeds that of any yellow laser. The concept allows for further substantial increases in intensity, total output power and wall-plug efficiency through scaling-up and engineering refinements. AU - Sathian,J AU - Breeze,J AU - Richards,B AU - Alford,N AU - Oxborrow,M DO - 10.1364/OE.25.013714 EP - 13727 PY - 2017/// SN - 1094-4087 SP - 13714 TI - Solid-state source of intense yellow light based on a Ce:YAG luminescent concentrator T2 - Optics Express UR - http://dx.doi.org/10.1364/OE.25.013714 UR - https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-25-12-13714&id=367395 UR - http://hdl.handle.net/10044/1/48274 VL - 25 ER -