Optical studies of off-centre ions in strontium oxide

Abstract

Experimental and theoretical investigations of strontium oxide doped with nickel and strontium oxide doped with cobalt are described in this thesis. The principal experimental technique is that of recording the absorption spectrum. This is completed over a wide range of wavelengths (0.4y to 2.0y) and of temperature (2 K to 300 K). The effect of magnetic fields of up to 5 T are investigated and for sharp lines the Zeeman, or for broad bands the MOD, spectra are recorded. Large electric fields of up to 50 kV/cm are also used and Stark and pseudo-Stark effects recorded.