The orientation relationship between the crystallographic axes and the principal axes of the optical indicatrix for a Li6Gd(BO3)3 single crystal grown by the Czochralski method was determined. The polarized absorption spectra, polarized fluorescence spectra, and fluorescence decay curve of Nd3+:Li6Gd(BO3)3 were measured at room temperature. On the basis of the Judd-Ofelt theory and the Fuchtbauer-Landenburg formula, the spectroscopic parameters of Nd3+:Li6Gd(BO3)3 relevant to laser properties were obtained and compared with other borate laser crystals. A primary laser output of about 130 mW at 1056 nm with the slope efficiency of 13% was obtained under a Ti:sapphire laser pumping.
© 2006 Optical Society of America
Lasers and Laser Optics
Original Manuscript: February 28, 2006
Revised Manuscript: June 20, 2006
Manuscript Accepted: July 11, 2006
Xinghong Gong, Yanfu Lin, Yujin Chen, Zundu Luo, Qiguang Tan, and Yidong Huang, "Polarized spectral analysis of Nd3+ ions in Li6Gd(BO3)3 biaxial crystals," J. Opt. Soc. Am. B 23, 2059-2065 (2006)