J. Phys. IV France 04 (1994) C4-587-C4-590
Upconversion and energy transfer modeling in Er, Yb : CaYAlO4B. ZANDI1, L.D. MERKLE1, J.A. HUTCHINSON2, H.R. VERDUN3 and B.H.T. CHAI4
1 IR Optics Technology OFC/ARL, 10235 Burbeck Rd Ste 110, FT Belvoir, VA 22060-5838, U.S.A.
2 Lasers and Photonics Division/NVESD, 10221 Burbeck Rd Ste 430, FT Belvoir, VA 22060-5806, U.S.A.
3 Fibertek, Inc., 5120 Herndon Parkway, Herndon, VA 22070, U.S.A.
4 Departments of Physics and Mechanical Engineering/CREOL, University of Central Florida, Orlando, FL 32826, U.S.A.
This paper models the mechanism of upconversion and energy transfer between Er and Yb ions in diode-pumped Er, Yb : CaYAlO4 crystal. Rate equations are used for modeling and are solved numerically for the populations of different levels as a function of time. Many input parameters are measured experimentally and the rest of the parameters are predicted from the model. Population inversion is studied for these transitions in Er : [MATH]
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