[2] Hopkins F K. Nonlinear materials extend the range of high-power lasers. Laser Focus World, 1995, 31(7):87~93
[6] Bosenberg W R, Guyer D R. Broadly tunable single-frequency optical parametric frequency-conversion system. J. Opt. Soc. Am (B), 1993, 10(9):1717~1722
[7] Marshall L R, Kaz A. Eye-safe output from noncritically phase-matched parametric oscillators. J. Opt. Soc. Am. (B), 1993, 10(9):1730~1736
[8] Kato K. Second-harmonic and sum-frequency generation to 4950 and 4589 in KTP. IEEE J. Quant. Electron., 1988, 24(1):3~4
[9] Rockwell D A. A review of phase-conjugate solid-state lasers. IEEE J. Quant. Electron., 1988, 24(6):1124~1139