Effect of broadband incoherent light on the photoresponse of lithium niobate crystals

The effect of broadband incoherent light on the local photoresponse of lithium niobate crystals has been experimentally investigated. It is shown that a previously induced electric field affects the dependence of the photovoltage on time and impurity type and concentration. The pyroelectric effect significantly influences the photoprocesses in lithium niobate crystals, especially in the initial stage of illumination.