Applied Physics B

, Volume 71, Issue 4, pp 469–473

Optical properties and highly efficient laser oscillation of Nd:YAG ceramics

  • J. Lu
  • M. Prabhu
  • J. Song
  • C. Li
  • J. Xu
  • K. Ueda
  • A.A. Kaminskii
  • H. Yagi
  • T. Yanagitani

DOI: 10.1007/s003400000394

Cite this article as:
Lu, J., Prabhu, M., Song, J. et al. Appl Phys B (2000) 71: 469. doi:10.1007/s003400000394

Abstract.

Optical absorption, emission spectra have been measured for polycrystalline Nd-doped Y3Al5O12 ceramics. Fluorescence lifetimes of 257.6 μs, 237.6 μs, 184.2 μs and 95.6 μs have been obtained for 0.6%, 1%, 2% and 4% neodymium-doped YAG ceramics, respectively. For the first time, highly efficient laser oscillation at 1064 nm has been obtained with this kind of ceramics. Slope efficiency of 53% has been achieved on a uncoated 4.8-mm thick 1% Nd:YAG ceramics sample. Optical to optical conversion efficiency is 47.6%. Laser oscillation has also been obtained with a 2% Nd:YAG ceramics. The optical properties and laser output results have been compared with that of Nd:YAG single crystal grown by the Czochralski method. Almost identical results have been achieved including laser experiments results. But fabrication of Nd:YAG ceramics is much easier compared to the single-crystal growth method. And also large size (now of about 400 mm diameter×5 mm is available) and high-concentration (>1%) Nd:YAG ceramics can be fabricated. The results show that this kind of Nd:YAG ceramics is a very good alternative to Nd:YAG single crystal.

PACS: 42.70.Hj; 42.55.Xi

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • J. Lu
    • 1
  • M. Prabhu
    • 1
  • J. Song
    • 1
  • C. Li
    • 1
  • J. Xu
    • 1
  • K. Ueda
    • 1
  • A.A. Kaminskii
    • 2
  • H. Yagi
    • 3
  • T. Yanagitani
    • 3
  1. 1.Institute for Laser Science, University of Electro-communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan (Fax: +81-424/85-8960, E-mail: lu@ils.uec.ac.jp)JP
  2. 2.Institute of Crystallography of the Russian Academy of Sciences, Crystal Laser Physics Laboratory, Leninski pr. 59, Moscow 117333, RussiaRU
  3. 3.Takuma Works, Konoshima Chemical Co., Ltd., 80 Kouda, Takuma, Mitoyo-gun, Kagawa 769-11, JapanJP