[1] Kintaka K, Fujimura M, Suhara T et al.. High-efficiency LiNbO3 waveguide second harmonic generation devices with ferroelectric-domain inverted gratings fabricated by applying voltage. J. Lightwave Technol., 1996, 14(3):462～468

[2] Yamada M, Nada N, Saitoh M et al.. First-order quasi-phase matched LiNbO3 waveguide periodically poled by applying an external field for efficient blue second-harmonic generation. Appl. Phys. Lett., 1993, 62(5):435～436

[3] Batchko R G, Shur V Y, Fejer M M. Backswitch poling in lithium niobate for high-fidelity domain patterning and efficient blue light generation. Appl. Phys. Lett., 1999, 75(12):1673～1675

[4] Fujimura M, Suhara T, Nishihara H. Ferroelectric-domain inversion induced by SiO2 cladding for LiNbO3 waveguide SHG. Electron. Lett., 1991, 27(13):1207～1209

[5] Sonoda S, Tsuruma I, Hatori M. Second harmonic generation in a domain-inverted MgO-doped LiNbO3 waveguide by using a polarization axis inclined substrate. Appl. Phys. Lett., 1997, 71(21):3048～3050

[6] Ishigame Y, Suhara T, Nishihara H. LiNbO3 waveguide second-harmonic-generation device phase matched with a fan-out domain-inverted grating. Opt. Lett., 1991, 16(6):375～377

[7] Mizuuchi K, Yamamoto K, Kato M, Harmonic blue light generation in X-cut MgO:LiNbO3 waveguide. Electron. Lett., 1997, 33(9):806～807

[8] Yu Jian, Ni Wenjun, Xue Ting et al.. Periodically poled second harmonic green light generation in LiNbO3. J. Optoelectronics Laser (光电子·激光), 2002, 13(4):339～342 (in Chinese)

[9] Yu Jian, Ni Wenjun, Li Shichen et al.. Quasi-phase-matched frequency doubling blue light generation in LiNbO3. Acta Optica Sinica(光学学报), 2000, 20(3):410～413(in Chinese)

[10] Xue Ting, Yu Jian, Yang Tianxin et al.. Numerical analysis and optimization of quasi-phase-methed second-harmonic-generation in LiNbO3 waveguide. Acta Physics Sincia (物理学报),2002, 51(3): 656～572 (in Chinese)