[en] Small (sub)micron dust is present over the entire lifetime of protoplanetary disks. As aggregation readily depletes small particles, one explanation might be that dust is continuously generated by larger bodies in the midplane and transported to the surface of the disks. In general, in a first step of this scenario, the larger bodies have to be destroyed again and different mechanisms exist with the potential to accomplish this. Possible destructive mechanisms are fragmentation in collisions, erosion by gas drag, or light-induced erosion. In laboratory experiments, we find that the latter, light-induced erosion by Knudsen compression and photophoresis can provide small particles. It might be a preferred candidate, as the dust is released into a low particle density region. The working principle of this mechanism prevents or decreases the likelihood for instant re-accretion or re-growth of large dense aggregates. Provided that there is a particle lift, e.g., turbulence, these particles might readily reach the surface of the disk.