D. J. Armstrong and A. V. Smith, "150-mJ 1550-nm KTA OPO with good beam quality and high efficiency," Proc. SPIE 5337, 71-80 (2004).
D. J. Armstrong and A. V. Smith, "Using a Newport refractive beam shaper to generate high-quality flat-top spatial profiles from a flashlamp-pumped commercial Nd:YAG laser," Proc. SPIE 5525, 88-97 (2004).
http://www.sandia.gov/imrl/XWEB1128/xxtal.htm A complete package of numerical models for crystal nonlinear optics is available in the SNLO software package from A. V. Smith at Sandia National Labs. Models for the RISTRA OPO are available on request.
D. Gapontsev, N. Platonov, M. Meleshkevich, A. Drozhzhin, V. Sergeev, "415 W Single-Mode CW Thulium fiber laser in all-fiber format," in CLEO-Europe 2007, Technical Digest, paper CP2-3-THU.
M. Petros, J. Yu, U. N. Singh, and N. P. Barnes, "High energy directly pumped Ho:YLF laser," in Advanced Solid State Lasers, OSA Trends in Optics and Photonics Vol. 34, (Optical Society of America, 2000), pp. 178-181.
A. Dergachev and P. F. Moulton, "High-power, high-energy diode-pumped Tm:YLF-Ho:YLF-ZGP laser system", in Advanced Solid-State Photonics, OSA Trends in Optic and Photonics Vol. 83, (Optical Society of America, 2003), pp. 137-141.
A. Dergachev, P. F. Moulton, and T. E. Drake, "High-power, high-energy Ho:YLF laser pumped with Tm:fiber laser," in Advanced Solid-State Photonics, OSA Trends in Optic and Photonics Vol. 98, (Optical Society of America, 2005), pp. 608-612.
V. G. Dmitriev, G. G. Gurzadyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals (Springer-Verlag, 1997).
P. A. Budni, C. R. Ibach, S. D. Setzler, L. A. Pomeranz, M. L. Lemons, P. A. Ketteridge, E. J. Gustafson, Y. E. Young, P. G. Schunemann, T. M. Pollak, R. T. Castro, and E. P. Chiklis, "20-mJ, 3-5 micron ZnGeP2 optical parametric oscillator pumped by a 2.09-micron Ho:YAG laser," in Advanced Solid State Photonics, Technical Digest (Optical Society of America, 2003), paper PD12-1.