Growth and spectral investigations of oxide laser crystals with Pr3+ ions

The main types of inhomogeinity in rhombic aluminate crystals doped with Pr³⁺ ions arise from light scattering particles and lattice defects causing colour center formation under short wavelength radiation. It is shown that additional electron and hole traps (iron and praseodimium ions) change the direction of processes of charge carrier release and capture as compared with the case of pure crystals.