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 attaching the light conversion block to the substrate , wherein: the interconnector minimizes a thermal resistance between the light conversion block and the substrate ; and the interconnector 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 attaching the light conversion block to the substrate , wherein: the interconnector minimizes a thermal resistance between the light conversion block and the substrate ; and the interconnector 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 minimizes a thermal resistance between the light conversion block and the substrate ; and the interconnector 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. <EOS>