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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper JTuA3

High order frequency conversion in the plasma waveguide

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Abstract

Nonlinear optics in plasma fibers is distinguished by (1) the unique dispersion properties of the fiber, leading to the wavelength independence of the transverse mode structure; (2) the confinement of extremely high propagating intensities, which gives rise to very high-order non-perturbative processes that can occur with efficiencies comparable to lower order processes; and (3) the dynamic evolution of the plasma waveguide in time, so that the geometric contribution to its dispersion relation is tunable and offers a degree of freedom for phase matching not previously available. We have demonstrated guiding of intensities up to 5 × 1015 W/cm2 in plasma fibers as long as 3 cm. This is well within the range for non-perturbative polarization.2 Experiments in phase matching and parametric mixing at high intensity are now being performed, using our ability to adjust the waveguide's length, index depth, and curvature, and the laser pulse’s intensity, width, and wavelength.

© 1996 Optical Society of America

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