The spectroscopic characteristics in the 1.3 mum region of nonstoichiometric fluorite phases M1-xRxFm(1-x)+nx, doped by Nd3+ ions were investigated. The direct measurements of excited state absorption and amplification in 1.3 mum region were carried out. The halfwidth of amplification spectrum in Na0.5-xY0.5+xF2+2x and Ca1-xYxF2+x crystals was found to be less than that the halfwidth of the luminescence spectrum due to excited state absorption (ESA). The maxima of amplification bands are located at approximately 1365 nm with halfwidth of approximately 40 nm for Na0.5-xY0.5+xF2+2x crystals and approximately 60 nm for Ca0.9Y0.1F2.11 crystals. The maximum values of effective cross sections sigma(eff) = sigma(em) - sigma(esa) for these crystals are 2.2 +/- 0.7 x 10(-21) cm2 and 4.5 +/- 0.9 x 10(21) cm2, respectively.
My Sharonov合作论文数3EA KRIVANDINA合作论文数3A. A. Bystrova合作论文数3BK SEVASTYANOV合作论文数2Zi Zhmurova合作论文数2B. P. Sobolev合作论文数2b k sevastyanov合作论文数2Ay Toporov合作论文数1Mikhail Sharonov合作论文数1Ln Demianets合作论文数1AB BYKOV合作论文数1AA KRIVOLAPOV合作论文数1Gv Kanunnikov合作论文数1Ap Chirkin合作论文数1Ls Starostina合作论文数1Bp Sobolev合作论文数1Z. I. Zhmurova合作论文数1Yu. N. Martyshev合作论文数1
