Co-doped spinels: promising materials for solid state lasers

Nickolai V. Kuleshov; Victor P. Mikhailov; V. G. Scherbitsky

doi:10.1117/12.181357

27 July 1994 Co-doped spinels: promising materials for solid state lasers

Nickolai V. Kuleshov, Victor P. Mikhailov, V. G. Scherbitsky

Proceedings Volume 2138, Longer Wavelength Lasers and Applications; (1994) https://doi.org/10.1117/12.181357
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Optical absorption, luminescence, saturation of absorption and lifetime measurements have been carried out on Co-doped MgAl₂O₄ and ZnGa₂O₄. The crystal field parameters are estimated for the tetrahedral Co²⁺ ion. Three luminescence bands observed in the visible and near infrared are assigned to transitions from the ⁴T₁(⁴P) level to the lower levels ⁴A₂(⁴F), ⁴T₂(⁴F), and ⁴T₁(⁴F), respectively. Strong luminescence quenching due to nonradiative decay processes is observed MgAl₂O₄:Co. Saturation of Co²⁺ absorption at 540 nm is measured and the absorption cross section is estimated to be 2.1 + 0.2 X 10^-19 cm² in MgAl₂O₄.

Citation Download Citation

Nickolai V. Kuleshov, Victor P. Mikhailov, and V. G. Scherbitsky "Co-doped spinels: promising materials for solid state lasers", Proc. SPIE 2138, Longer Wavelength Lasers and Applications, (27 July 1994); https://doi.org/10.1117/12.181357

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