An attachment for an optical spectrometer is described enabling automated measurements of the impurity distribution in a crystal. For analysis of the Nd3+ ion distribution over a LiYF4 crystal, it is shown that the attachment ...

It is demonstrated, that a luminescence spectrometer, in which signal detection is performed on the principle of synchronous integration, can be used as a phase fluorometer. For enhancing the accuracy, luminescence lifetime ...

© 2016 Elsevier B.V.A method of correlation analysis of spectroscopic data is developed that allows the determination of patterns in experimental results with and without the application of a functional physico-mathematical ...

KMgF3 and KZnF3 crystals doped with Nd3+ ions were studied using EPR and optical spectroscopy methods. Several types of paramagnetic centers of Nd3+: KMgF3 - two of tetragonal and one of rhombic symmetry; KZnF3 - one of ...

Electron paramagnetic resonance, electron-nuclear double resonance, and optical spectroscopy of the tetragonal Yb3+ center in KMgF3 are reported here. The results of these experiments allow us to conclude that a previously ...

© 2014, Pleiades Publishing, Inc. Upconversion luminescence kinetics of Tm3+ doped Y0.8Yb0.2F3 solid solution crystal was studied for various values of pulse excitation parameters: pulse duration, wavelength and excitation ...

Groups of lines corresponding to octahedral cubic and trigonal impurity centers have been isolated in complex many-center luminescence and excitation spectra of Yb3+-doped KMgF3 and KZnF3 crystals. The crystal-field ...

© 2019, Pleiades Publishing, Ltd. Abstract: The regression analysis of the rise kinetics of up-conversion luminescence of the LiY0.8Yb0.2F4:Tm3+ (0.2 at %) crystal is performed. The kinetics curve is obtained with rectangular ...

© 2015, Pleiades Publishing, Inc. A new mechanism has been proposed for the transfer of the energy of exciting laser radiation through the donor subsystem (Yb3+) to acceptors (Tm3+), which induces multiphoton transitions ...

The temperature dependences of the spin-lattice relaxation of rare-earth ions (RE3+) are investigated in YLiF4 single crystals. The EPR spectra of Er3+ and Dy3+ are detected and studied at the excited levels of the ground ...