Spectroscopic characteristics of the erbium ions and laser action at the transition4S3/2 →4I9/2 (λe ≍ 1.66 μm) in the crystals of gadolinium, yttrium, and lutecium orthoaluminates
I. V. Mochalov
The Czochralski method is employed to synthesize crystals of compound orthoaluminates: GdAlO3, YAlO3, and LuAlO3 doped with erbium (Er3+). The crystal splitting schemes of 4S3/2, 4F9/2, 4IJ levels of Er3+ at 77 K are plotted based on an analysis of optical spectra. Stimulated emission due to a 4S3/2 → 4I9/2 transition is observed from Er3+ ions GdAlO3, YAlO3 at 77 K. Pulsed laser action at room temperature is only observed from Er3+ ions in YAlO3.
physica status solidi (a)•Sep 16, 1979•7 citations