Evaluation of Mn5+-doped Sr-5(VO4)(3)F as a laser material based on excited-state absorption and stimulated-emission measurements
Abbreviated Journal Title
J. Opt. Soc. Am. B-Opt. Phys.
HOST LATTICES; LUMINESCENCE; MN5+; MN5+SR-5(VO4)(3)F; SR5(PO4)3CL; ION; Optics
Excited-state absorption and stimulated-emission measurements of Mn5+-doped Sr-5(VO4)(3)F were made with a pump-and-probe technique. Strong excited-state absorption bands were observed, corresponding to the transitions from the E-1(D-1) metastable level to higher-lying singlet levels. The stimulated emission from the E-1(D-1) level to the (3)A(2)(F-3) ground state is overlapped by a tail of the E-1(D-1) --> T-1(2)(D-1) excited-state absorption band. The cross section of the E-1(D-1) --> T-1(2)(D-1) transition at 1161 nm is (1.4 +/- 0.3) x 10(-20) cm(2) for E parallel to c and (2.4 +/- 0.5) x 10(-20) cm(2) for E perpendicular to c. The ratio between the excited-state absorption and the stimulated-emission cross section at 1161 nm is 0.52 for E parallel to c and 1.82 for E perpendicular to c. Therefore laser emission is expected to be inefficient in E parallel to c polarization and not to be possible in E perpendicular to c polarization. The crystal field parameters in the cubic field approximation were determined to be Dq = 1134 cm(-1), B = 356 cm(-1), and C = 2918 cm(-1), giving Dq/B = 3.19 and C/B = 8.20. (C) 1997 Optical Society of America.
Journal of the Optical Society of America B-Optical Physics
"Evaluation of Mn5+-doped Sr-5(VO4)(3)F as a laser material based on excited-state absorption and stimulated-emission measurements" (1997). Faculty Bibliography 1990s. 1970.