RT Book, Section T1 Concentration and power dependences of level population of 2.8-mu m laser transition in YLF : Er crystals under CW laser diode pumping A1 Tkachuk, A. M. A1 Razurnova, I. K. A1 Mirzaeva, A. A. A1 Novikoi, G. E. A1 Orlov, O. A. A1 Malyshev, Andrey A1 Gapontsev4, V. P. AB An influence of interionic cross relaxation processes (upconversion, selfquenching) on concentration and power dependences of the inverse population of ^4I_(11/2) and ^4I_(13/2) laser levels in YLF:Er crystals under CW laser-diode pumping were studied both theoretically and experimentally. Computer simulations were carried out taking into account not only pair interaction but also the multi-ion interaction in the whole system. Optimal Er concentration for 3 - µm CW lasing was estimated as 10 - 15%. PB Spie-Int Soc Optical Engineering SN 0-8194-4040-X YR 2001 FD 2001 LK https://hdl.handle.net/20.500.14352/61008 UL https://hdl.handle.net/20.500.14352/61008 LA eng NO ©Spie-Int Soc Optical Engineering.ISSN: 0277-786XLaser Optics 2000 Conference (2000. San Petersburgo,Rusia)The work was partly supported by INTAS, Grant No JNTAS-97-787, and Russian Foundation for Basic Researches, Grants No 98-02-18 102 and 00-02-16637 NO INTAS NO Russian Foundation for Basic Researches DS Docta Complutense RD 11 abr 2025