Abstract

The influence of phase mismatch, group delay, andoptical losses of waveguide modes on third-harmonic generation in a hollow fibre is investigated. An analytical solutionto the equation governing the slowly varying envelope of thethird-harmonic pulse in a leaky mode of a gas-filled hollowfibre is derived. Optimal conditions for third-harmonic generation in such a fibre are determined for different pump pulsedurations and various rare gases.

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