•Semiconductor laser irradiation assisted synthesis of CCT crystals.•FTIR and EDX confirms the presence of functional and metal–oxygen bonds.•Laser irradiated crystals show high thermal stability (>600 °C) in its oxide state.•The grown crystals are highly crystalline and belongs to monoclinic crystal system. In the present investigation, the effect of semiconductor laser (GaAs) irradiation on silica gel medium during the crystal growth have been reported. After the growth, laser irradiated cadmium doped copper (CCT) tartrate single crystals were compared with without irradiate CCT single. The obtained single crystals having different morphologies, such as bluish semi-transparent, star-shaped, needle-shaped crystals. The effect of semiconductor laser irradiation during the growth, changes the crystals morphology, reduces the number and size of crystals compared to the crystals grown without irradiation. This is due to the variation of supersaturation. This effect of semiconductor laser irradiation of grown crystals was characterized using energy-dispersive X-ray (EDX) spectroscopy, Field emission scanning electron microscopy (FESEM), Thermo gravimetric analyzer (TGA), and Powder X-ray diffraction (PXRD).