Light-Emitting Device with Remote Phosphor and Recessed Light Emitting Element

A light-emitting device comprising:

• an LED pump or a semiconductor laser configured to emit pump light during operation;
• a phosphor element having a first surface spaced apart from the LED pump or semiconductor laser and positioned to receive at least some pump light from the LED pump or semiconductor laser, the phosphor element configured to convert pump light to converted light and to scatter non-converted pump light, wherein the converted pump light and the scattered non-converted pump light are provided by the phosphor element as scattered light;
• an extractor element formed from a transparent material having an exit surface, the extractor element being arranged to receive a portion of the scattered light through a region of contact with the phosphor element;
• and
• a reflector forming a recess, the LED pump or semiconductor laser being disposed in the recess, the reflector and the phosphor element defining an enclosure into which pump light from the LED pump or semiconductor laser is emitted, at least a portion of the first surface having a concave shape with respect to the enclosure, wherein
• a medium having a refractive index n0 is disposed adjacent the first surface of the phosphor element, and the phosphor element comprises a material having a first refractive index n1, where n0<n1, and the transparent material has a refractive index n2, where n0<n2, and
• the exit surface is shaped and positioned such that an angle of incidence on the exit surface of the scattered light from the region of contact that directly impinges on the exit surface is less than the critical angle for total internal reflection.