Despite new developments for compact laser devices, the neodymium ion (Nd3+), continues to be the most widely used active laser ion. In this article, the growth of Nd:LiYF4 (Nd:YLF) and Nd:LiLa(WO4)(2) (Nd:LLW) single crystal fibers growth is reported considering their use as laser media. Homogeneous and good optical quality single crystals fibers of both materials were obtained. Additionally, structural and optical characterizations were performed on Nd:LLW single fibers. The dependence of the atmosphere on Nd:YLF fibers growth were also studied. Dopant distribution was measured along the fibers. Loss and gain tests were performed on the fluoride single crystal fiber to prove that laser action is achievable. (C) 2010 Elsevier B.V. All rights reserved.