The method for phase-matching successive high-order harmonic generation in gas-filled hollow fibres is proposed. Successive harmonic generation allows the energy of optical harmonics to be increased as compared with the direct harmonic-generation process. With an appropriate choice of the sort and the pressure of the gas filling the fibre, parameters of the fibre, the wavelength of pump radiation, and the waveguide modes, phase-matching conditions can be simultaneously satisfied for all the steps of successive nonlinear optical high-order harmonic generation. Under these conditions, a gas-filled hollow fibre may serve as an efficient two-colour source of coherent short-wavelength radiation.
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机译：提出了用于膨胀中空纤维中相位匹配的连续高阶谐波产生的方法。 与直接谐波发电过程相比，连续的谐波产生允许增加光学谐波的能量。 With an appropriate choice of the sort and the pressure of the gas filling the fibre, parameters of the fibre, the wavelength of pump radiation, and the waveguide modes, phase-matching conditions can be simultaneously satisfied for all the steps of successive nonlinear optical high - 谐波生成。 在这些条件下，燃气填充的中空纤维可以用作相干短波长辐射的有效双色源。
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