This work provides reversible phototuning of the laser emission by means of photoisomerization of chiral azobenzene, causing change in the reversible helical pitch. Cholesteric liquid crystals were prepared by mixing a low molar mass liquid crystal (TKS), a laser dye (DCM), a nonphotochromic chiral compound (S811) and a chiral azobenzene compound (Azo). Lasing from the cholesteric liquid crystal was observed at longer band edge of the selective reflection. Reversible shift of the lasing was brought about by UV light irradiation and following visible light irradiation.