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Spectroscopic and lasing properties of calcium niobium gallium garnet activated with Tm³⁺ and Cr³⁺ ions

Yu. K. Voronko, S. B. Gessen, N. A. Es'kov, A. A. Zverev, P. A. Ryabochkina, A. A. Sobol, S. N. Ushakov, L. I. Tsymbal


Abstract: An investigation was made of spectroscopic and lasing properties of a calcium niobium gallium garnet crystal (CNGG) activated with Tm and Cr. A study was made of the kinetics of decay of the luminescence emitted by the Cr³⁺ ions. Efficient nonradiative transfer of energy from the Cr³⁺ to the Tm³⁺ ions was observed at room temperature. Stimulated radiation was generated in CNGG:Tm:Cr crystals (due to the ³F₄→³H₆ transition) under conditions of free running: the wavelength of this radiation was 2.02 μm at room temperature.

UDC: 621.373.826.038.825.2

PACS: 42.55.Rz, 42.70.Hj, 42.60.By, 42.60.Jf

Received: 10.01.1992

 English version: Soviet Journal of Quantum Electronics, 1992, 22:7, 581–583

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