Cr4+-doped silicates : spectroscopy and laser applications V.P. MIKHAILOV, N.V. KULESHOV, V.G. SHCHERBITSKY, B.I. MINKOV, N.I. ZHAVORONKOV, A.S. AVTUKH, T.G. GLYNN and R. SHERLOCK J. Phys. IV France, 04 C4 (1994) C4-607 DOI: 10.1051/jp4:19944157
