[1] [1] Tomaru T, Petek H.Femtosecond Cr4+∶ YAG laser with an L-fold cavity operating at a 1.2 GHz repetition rate.Opt Lett, 2000,25(8):584～587 ］Keller U, Miller D A B, Boyd G D,et al.Solid-state low-loss intracavity saturable absorber for Nd∶YLF lasers: an A-FPSA. Opt Lett, 1992,17(7): 505～508

[2] [2] Krainer L, Paschotta R, Spühler G J,et al.29 GHz modelocked miniature Nd∶YVO4 laser.Electron Lett, 1999,35(14):1160～1163

[3] [3] Krainer L, Paschotta R, Moser M,et al.77 GHz soliton modelocked Nd∶YVO4 laser.Electron Lett, 2000,36 (22): 1846～1849