Pressure control of phase matching in high-order harmonic generation in hollow fibers filled with an absorbing weakly ionizing gas

被引：19

作者：

Naumov, AN ^{[1
]}

Zheltikov, AM ^{[1
]}

Fedotov, AB ^{[1
]}

Sidorov-Biryukov, DA ^{[1
]}

Tarasevitch, AP ^{[1
]}

Zhou, P ^{[1
]}

von der Linde, D ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Phys, Ctr Int Laser, Moscow 119899, Russia

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2001年 / 18卷 / 06期

关键词：

D O I：

10.1364/JOSAB.18.000811

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High-order harmonic generation in a hollow fiber filled with a weakly ionizing gas is theoretically analyzed within the framework of the slowly varying envelope approximation. The gas pressure that corresponds to maximum efficiency of frequency conversion, the absorption coefficient, the phase mismatch owing to gas dispersion, and the enhancement of harmonic-generation efficiency owing to waveguide phase matching are estimated for 27th-harmonic generation in hollow fibers filled with helium, neon, argon, krypton, or xenon. As a result of the ionization-induced self-phase modulation of the pump pulse in a hollow fiber filled with a weakly ionizing gas, the phase mismatch changes within the pump pulse, decreasing the overall efficiency of harmonic generation and making the harmonic-generation efficiency less sensitive to the gas pressure in the hollow fiber. (C) 2001 Optical Society of America.

引用

页码：811 / 817

页数：7

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