K. V. Yumashev, N. V. Kuleshov, A. M. Malyarevich, P. V. Prokoshin, V. G. Shcherbitskii, N. N. Posnov, V. P. Mikhailov, V. A. Sandulenko, “Excited-state absorption in an yttrium aluminium garnet crystal doped with V<sup>3+</sup> ions”, Kvantovaya Elektronika, 1996, Volume 23, Number 11,Pages <nobr>995

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Excited-state absorption in an yttrium aluminium garnet crystal doped with V³⁺ ions

K. V. Yumashev, N. V. Kuleshov, A. M. Malyarevich, P. V. Prokoshin, V. G. Shcherbitskii, N. N. Posnov, V. P. Mikhailov, V. A. Sandulenko

International Laser Center, Belarus State Technical University, Minsk

Abstract: The differential absorption spectra of an V³⁺:Y₃Al₅O₁₂ crystal were investigated by a picosecond pump-and-probe method. An analysis of the results led to the conclusion that the induced absorption bands observed in the 850 — 890 and 650 — 770 nm ranges were due to, respectively, the ¹E(¹D) → ¹T₁(¹G) and ¹E(¹D) → ¹E(¹G), ¹T₂(¹G) transitions in a tetrahedrally coordinated V³⁺ ion. The lifetime of the ¹E(¹D) level was estimated to be ~130 ps. Bleaching of the ³A₂ → ³T₁(³P) absorption band of the tetrahedral V³⁺ ion was also observed.

PACS: 78.40.Ha, 42.70.Hj, 42.55.Rz

Received: 01.01.1996