[1] [1] J. D. Bierlein, H. Vanherzeele. Potassium titanyl phosphate, properties and new applications. J. Opt. Soe. Am. B, 1989,28(4):622～633

[2] [2] L. R. Marshall, A. Kaz. Eye-safe output from noncritically phase-matched parametric oscillators. J. Opt. Soc. Am. B, 1993,10(9):1730～1736

[3] [3] L. R. Marshall, J. Kasinski, R. L. Burnham. Diode-pumped eye-safc laser source exceeding 1 0 0 efficiency. Opt. Lett.,1991,16(21):1680～1682

[4] [4] L. R. Marshall, J. Kasinki, A. D. Hays et al.. Efficient optical parametric oscillator at 1. 6 μm. Opt. Leet.,1991,16(9):681～683

[5] [5] R. C. Eckardt, H. Masuda, Y. X. Fan et al.. Absolute and relative nonlinear optical coefficients of KDP, KD*P, BaBZ04, LiIO0, MgO: LiNb03, and KTP measured by phase-matched second-harmonic generation. IEEE J. Quantum Electron.,1990, 20(5):922～933

[6] [6] Tso Yee Fan, C. E. Huang, B. Q. Hu et al.. Second harmonic generation and accurate index of refraction measurements in flux-grown KTiOPO. Appl. Opt,1987, 26(12):2390～2394

[7] [7] V. A. Dyakov, V. V. Krasnikov, V. I. Pryalkin eL al.. Sellmeier equation and tuning characteristics of KTP crystal frequency converters in the 0.4～4.0 μM range. Sov. J. Quantum Electron.,1988, QE-18(9):1059～1060

[8] [8] K. Kato. Parametric oscillation at 3.2 μm in KTP pumped at 1.064 μm. IEEE J. Quantum Electron.,1991,27(5):1137～1140