The optical, thermally stimulated luminescence (TSL), and optically stimulated luminescence (OSL) properties of CsBr:Cu transparent ceramics were evaluated. As the photoluminescence properties, two emissions around 460 and 490 nm related to Cu + and Cu 2+ ions, respectively, were observed under excitation at around 300 nm, and the quantum yield of CsBr:Cu (0.01%) was 17.3%. After X-ray irradiation, all the samples showed a broad TSL and OSL emission band around 400-500 nm. All the samples exhibited good proportionality in the TSL and OSL dose response functions in the dose ranges of 0.01-100 and 1-1000 mGy, respectively.