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Autor:
A.B. Kulinkin, S.P. Feofilov
Publikováno v:
Optical Materials. 94:231-236
The fluorescence of Cr3+ ions doped insulating crystals was studied under the laser excitation within the one-phonon vibronic sidebands of zero-phonon 4A2 - 2E transitions. The phonon-assisted anti-Stokes fluorescence spectra were observed at ambient
Publikováno v:
Optical Materials. 83:43-46
The 2E - 4A2 fluorescence spectra of probe Cr3+ centers in MgO nanolayers of different thickness deposited on Al2O3 and GaN substrates were studied. The films were produced by laser molecular beam epitaxy (LMBE). The spectra revealed the strong inhom
Autor:
A.B. Kulinkin, S.P. Feofilov
Publikováno v:
Optical Materials. 75:554-560
The fluorescence of Cr3+ ions doped insulating crystals was studied under the excitation in the long-wavelength tail of the absorption spectrum (“laser cooling regime”). The 4T2 - 4A2 and 2E - 4A2 fluorescence spectra with a dominant anti-Stokes
Autor:
S.P. Feofilov, A.B. Kulinkin, N. S. Sokolov, M.A. Yagovkina, D.S. Kuzin, A. M. Korovin, Alexander N. Smirnov, Sergey M. Suturin
Publikováno v:
Journal of Luminescence. 230:117754
The 5D0 – 7Fn fluorescence of Eu3+ ions in Y2O3 thin films grown on Al2O3 substrates was studied. The films were produced by laser molecular beam epitaxy. The spectral lines revealed small inhomogeneous broadening which evidences for small distorti
Publikováno v:
Optical Materials. 60:240-243
The fluorescence of CaF 2 single-crystals containing Eu 2+ ions was studied under the excitation in the long-wavelength tail of the absorption spectrum which is due to electric dipole allowed transitions (“laser cooling regime”). Though no actual
Autor:
A.B. Kulinkin, S.P. Feofilov
Publikováno v:
Journal of Luminescence. 170:121-126
The electric dipole allowed 4f 6 5d 1 –f 7 fluorescence of CaS:Eu 2+ crystals was studied under excitation in the long-wavelength tail of the absorption spectrum (the regime typical for laser cooling experiments). Though no actual cooling was detec
Publikováno v:
Solid State Communications. 226:39-43
The zero-phonon electronic transitions in Cr 3+ impurity ions in a series of Tb 3 z Y 3 −3 z Al 5 O 12 (0 z 3 x Y 3 −3 x Al 5 O 12 (0 x 2 E– 4 A 2 ) fluorescence spectra of Cr 3+ ions were observed which are not accompanied by strong inhomogene
Publikováno v:
Physics of the Solid State. 59:487-489
Luminescence of yttrium-aluminum garnet Y3Al5O12: Eu,Si samples is studied. It is found that luminescence is associated with Eu2+ ions, but does not correspond to intracenter 4f65d1–4f7 transitions. Measurements of the excited state lifetime point
Publikováno v:
Journal of Luminescence. 224:117284
Luminescence spectra of Cr3+ ions in Ca3Sc2Si3O12 garnet ceramics were studied in the 10–300 K temperature range. The single zero-phonon line of the Cr3+ 4T2 - 4A2 transition was observed below 140 K. The temperature dependence of the zero-phonon l