We present a spectroscopic study of transparent forsterite nanocrystalline glass–ceramic doped with chromium, a promising active medium for near-infrared fiber-optic applications. Absorption, emission, excited-state absorption spectra, and continuous function decay analysis of luminescence decay reveal the presence of Cr<sup>3+</sup> and Cr<sup>4+</sup> centers in both glass and crystal phases. The optical behavior of Cr<sup>3+</sup> and Cr<sup>4+</sup> centers is discussed and compared with that in bulk forsterite crystals.
© 2004 Optical Society of America
(060.2290) Fiber optics and optical communications : Fiber materials
(160.2750) Materials : Glass and other amorphous materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
M. Yu. Sharonov, A. B. Bykov, S. Owen, V. Petricevic, R. R. Alfano, G. H. Beall, and N. Borrelli, "Spectroscopic study of transparent forsterite nanocrystalline glass–ceramics doped with chromium," J. Opt. Soc. Am. B 21, 2046-2052 (2004)