S. Khiari , M. Diaf , K. Labbaci , Growth and Optical Studies of Erbium Doped KY3F10 Solid State Laser Material, Journal of Engineering and Applied Sciences, Volume 1,Issue 4, 2006, Pages 523-525, ISSN 1816-949x, jeasci.2006.523.525, (https://makhillpublications.co/view-article.php?doi=jeasci.2006.523.525) Abstract: In this study, we examine the optical properties of Er3+ ions doped KY3F10 single crystals. After crystal growth and X-ray diffraction analysis, the optical properties of Erbium ions in KY3F10.The measured absorption line strength at room temperature were used to fit the three phenomenological Jud-Ofelt (JO) parameters t(t = 2,4,6).The emission transition probabilities branching ratios and radiative lifetimes are then deduced. The possibility to use such material for laser emissions is discussed. Keywords: Solid state laser;laser spectroscopy;laser materials;fluoride;rare earth;judd-ofelt theory