We present results on the structures photoresponse of YBCO narrow-line stru
ctures with deliberately broadened resistive transitions. We have explored
the photoresponse of these systems as a function of temperature, bias curre
nt and power at wavelengths of 0.670, 0.850 and 10.6 mu m and at frequencie
s from 3 to 10(5) Hz at 0.670 mu m. The response was bolometric in nature i
n the vicinity of T-c (R similar to 30V/W). However, the response below T-c
shows significant enhancement at 0.670 mu m, The wavelength regime of the
enhancement suggests the participation of transient photodoping of the mate
rial or related phenomena.