[1] Gerge Turrell, Jacques Corset.Raman Microscopy Developments and Applications. London: Academic Press, Harcourt Brace & Company, 1996,41
[3] Renishaw.User Guide of Raman Microspectrophotometers. Old Town Wotton-Under-Edge Gloucestershire: Renishaw Transducer System Division, 1998,15
[4] Arthur F Gmitro, David Aziz. Confocal microscopy through a fiber-optic imaging bundle.Optics Letters,1993,18:8
[5] Kaminskii A A. Laser Crystals. New York: Springer-Verlag, 1981,129
[6] Mace G, Schaack G, Ng Toaning,et al. Optical phonons of terbium, Dysprosium, and ytterbium-garnet.Zeits. Physics,1970,230: 391