[2] Myers L E,W R Bosenberg.Periodically poled lithium niobate and quasi-phase-matched optical parametric oscillators[J].IEEE J.Quantum Electron.,1997,33 (10):1663-1772.

[3] Lefort L,K Puech,S D Butterworth,et al.Efficient,lowthreshold synchronously-pumped parametric oscillation in periodically-poled lithium niobate over the 1.3 μm to 5.3 μm range[J].Optics communications,1998,152(1):55-58.

[4] Byer R L,Harris S E.Power and bandwidth of spontaneous parametric emission[J].Phys.Rev.,1968,168 (3):1064-1068.

[5] Yariv A,Yeh P.Optical Wave in Crystals:Propagation and Control of Laser Radiation[M].New York:J.Wiley Press,1984.