We show lasing (with the threshold of mu J order) due to morphology-de
pendent resonances (MDRs) from solid polystyrene spheres with volume-d
istributed europium (Eu) chelates. Lasing spectra depending on MDRs ar
e reported, and a practical usefulness of the Eu chelate laser with th
e solid spheres is described compared with the previous one with liqui
d spheres.