The Mn2+:CdWO4 single crystal with good optical quality in the size of 25 mm×100 mm has been grown by bridgman method under the technical conditions of choosing CdO:WO3:MnO raw chemical composition in molar ratio of 100∶100∶0.5,taking ～60 ℃ temperature gradient of solid-liquid interface and 0.05 mm/h growth rate.The absorption,excitation and emission spectra of the unannealed,air-annealed and O2-annealed Mn2+:CdWO4 are investigated.An emission band at 591 nm,which is attributed to the electron t...