Recently, we have found visible, white and dazzling strong radiation induced by lasers(5 kindsof LDs) from non-hydrogenated amorphous carbon(a-C) at room temperature in vacuum with upcon- version and downconversion cascaded quantum process under the laser power density between 1 kW/cm2 and 1 MW/cm2. This phenomenon also exits for other nanostructured materials(10 types) but the energy transformed efficiency of a-C is much higher, more than 50 %, which implies potentials. It may be characterized as nano-radiation and it is also a reversed lasing process.