<title>Czochralski growth and characterization of SrLaGa<formula><inf><roman>3</roman></inf></formula>O<formula><inf><roman>7</roman></inf></formula>:Ho<formula>^{<roman>3+</roman>}</formula>single crystals</title>

Abstract

Rare -earth (Nd, Pr, Dy) doped SrLaGa 3 0 7 single crystals are promising laser materials. Also crystals doped with Ho 3 'ions could be used as efficient laser in visible and near infrared regions. Laser materials, generating in visible and infrared regions, can be used for optical data recording in microphotolitography and in medicine. SrLaGa 3 0 7 single crystals doped with 0.3, 1.5 and 2 at % of Ho 3 ', respectively were grown by the Czochralski method with use of iridium crucible and afterheater. According to EPMA measurements distribution coefficient of Ho 3 ÷ in SrLaGa 3 0 7 was estimated to be k_-0.22. Optical absorption spectra in visible and infrared regions were measured at 300 K and 12 K, respectively.Optical quality of single crystals was checked by the use of computerized imaging spectropolarimeter and polariscopic measurements. Temperature dependence of capacitance and conductivity for different dopant concentrations were also measured.

Bulk Crystal Growth, First-Principles Calculation, and Optical Properties of Pure and Er3+-Doped SrLaGa3O7 Single Crystals

“…The earliest crystal growth of SLGO might have begun in 1992 by Polish scientist Ryba-Romanowski et al It is an excellent laser gain media, and up until now, many kinds of rare earth ions were doped into this crystal and studied systematically, such as Nd 3+ , − Pr 3+ , Dy 3+ , Ho 3+ , etc. ; − a Co 2+ -doped SLGO crystal was studied with focus on the Jahn–Teller effect. , The studies on the nonlinear refractive indices and the radiation defects of SLGO crystal were carried out. − The crystal-field analysis for Nd 3+ ions in SLGO crystal was demonstrated . The whole-view research on the analyses of broad band, near-infrared emission in ABCO 4 and ABC 3 O 7 crystals was presented by the earliest researcher of this crystal (Witold Ryba-Romanowski) in 1997 .…”