Prospects for the development of high-order parametric amplifiers as an alternative to the existing inversion-based soft-x-ray lasers are analyzed. We show how the problem of phase matching can be solved. The possibility of gain transfer from a low-order parametric process to the high-order process is discussed. Initial encouraging experimental results toward the demonstration of high-order parametric amplifiers are reported.
© 1999 Optical Society of America
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(190.4160) Nonlinear optics : Multiharmonic generation
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
S. Meyer, B. N. Chichkov, and B. Wellegehausen, "High-order parametric amplifiers," J. Opt. Soc. Am. B 16, 1587-1591 (1999)