Optically induced effects in ultrafine Al2O3-BeO ceramics irradiated with high doses of a pulsed electron beam (130 keV) were investigated. It is found that optical (470 nm) excitation of ceramics results in optically stimulated luminescence due to the emptying of traps associated with thermoluminescence peaks at 380 and 530 K. It is found that these traps are characterized by a complex energy spectrum with a non-uniformly distributed photoionization cross section. The prospect of using optically stimulated luminescence of Al2O3-BeO ceramics in high-dose dosimetry (3-30 kGy) is proved.