Compact laser-based light generating device

The invention provides an apparatus (1) comprising a device (1000) wherein the device (1000) comprises a luminescent material constituting element (100) and a light transmissive element (200) wherein: (a) the device (1000) has a first device axis (A1); (b) the luminescent material constituent element (100) comprises a luminescent material (110) configured to emit luminescent material light (111) when irradiated with the first light (11), where the luminescent material constituent element (100) has a first length (L1) and a characteristic first dimension (D1) perpendicular to the first length (L1), where D1/L1lt; 1; wherein the luminescent material component element (100) is arranged at a non-zero first distance (r1) from the first component axis (A1), and wherein the luminescent material component element (100) at least partially surrounds the first component axis (A1); (c) the light transmissive element (200) is transmissive to the first light (11), where the light transmissive element (200) comprises an ele