The voltage photoresponse of YBa 2Cu 3O 7−x/SrTi0 3 10 nm-thick films on laser irradiation is studied using the low temperature scanning laser microscopy (LTSLM) technique. The irradiation wavelength is 633 nm. The spatial response dependencies via temperature (4–100 K), beam intensity modulation frequency (0–150 kHz) and bias current are examined. The bolometric and non-bolometric components are separated. The amplitude of the non-bolometric component at 4.2 K is about 10 times higher than that of bolometric one measured near the midpoint of the superconducting transition. The non-bolometric component is presumably associated with weak links in the film due to interdiffusion of SrTi0 3 into YBCO layer. The spatial irregularity in superconducting parameters is not resolved by the LTSLM method since the spacing between weak links is appeared to be less than 1 μn.