A lighting system comprising: a light source that produces a beam, wherein the beam is collimated or focused on a light conversion block; the light conversion block positioned to receive the beam from the light source as incident light, the light conversion block converting a portion of the incident light to converted light having a spectral distribution that differs from a spectral distribution of the incident light, wherein the light conversion block has a thickness between 30 and 150 microns; a substrate; and an interconnector (210, 230) attaching the light conversion block to the substrate, wherein: the interconnector (210, 230) minimizes a thermal resistance between the light conversion block and the substrate; and the interconnector (210, 230) and the substrate together provide a reflectivity that is greater than 85% for reflecting the incident light and the converted light away from the lighting system, characterized in that the light conversion block has an area of 0.5 mm by 0.5 mm or less, the interconnector comprises a glue layer between the light conversion block and the substrate, the glue layer comprises silicone glue, and the glue layer is less than 2 micron thick. a light source that produces a beam, wherein the beam is collimated or focused on a light conversion block; the light conversion block positioned to receive the beam from the light source as incident light, the light conversion block converting a portion of the incident light to converted light having a spectral distribution that differs from a spectral distribution of the incident light, wherein the light conversion block has a thickness between 30 and 150 microns; a substrate; and an interconnector (210, 230) attaching the light conversion block to the substrate, wherein: the interconnector (210, 230) minimizes a thermal resistance between the light conversion block and the substrate; and the interconnector (210, 230) and the substrate together provide a reflectivity that is greater than 85% for reflecting the incident light and the converted light away from the lighting system, characterized in that the light conversion block has an area of 0.5 mm by 0.5 mm or less, the interconnector comprises a glue layer between the light conversion block and the substrate, the glue layer comprises silicone glue, and the glue layer is less than 2 micron thick. the interconnector (210, 230) minimizes a thermal resistance between the light conversion block and the substrate; and the interconnector (210, 230) and the substrate together provide a reflectivity that is greater than 85% for reflecting the incident light and the converted light away from the lighting system, characterized in that the light conversion block has an area of 0.5 mm by 0.5 mm or less, the interconnector comprises a glue layer between the light conversion block and the substrate, the glue layer comprises silicone glue, and the glue layer is less than 2 micron thick. characterized in that the light conversion block has an area of 0.5 mm by 0.5 mm or less, the interconnector comprises a glue layer between the light conversion block and the substrate, the glue layer comprises silicone glue, and the glue layer is less than 2 micron thick. the interconnector comprises a glue layer between the light conversion block and the substrate, the glue layer comprises silicone glue, and the glue layer is less than 2 micron thick.