摘要
In this paper,we present the results of the optical absorption spectra of Cr doped Bi_(4)Ge_(3)O_(12) crystal at room temperature and compare them with the theoretical results of a multifold scattering(MS)-Xαcalculation which include the energy-level structures and the transition energies of Cr^(3+)and Cr^(4+)located in Ge-site in the crystal.
