5Zernike F, Jr, Berman P R. Phys. Rev. Lett. , 1965, 15:999
6Kaindl R A, Smith D C, Joschko Met al. Opt. Lett. , 1998, 23:861
7Likforman J P, Mehendale M, ViUeneuve D Met al. Opt. Lett. , 2001,26(2) :99
8Han H N, Zhao Y Y, Zhang Wet al. Enhanced SIN ratio of carrier-envelope offset frequency by using a new monolithic measurement scheme APLS (Asia Pacific Laser Symposium) 2008, Jan 30 to Feb 1