期刊
OPTICS EXPRESS
卷 16, 期 15, 页码 11103-11114出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.16.011103
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We study the possibility to obtain high-intensity pulses that maintain a constant Carrier Envelope Phase (CEP) during propagation in dispersive media, i.e. pulses such that the carrier-wave offset with respect to the main intensity peak remains fixed. Our numerical experiments strongly suggest that pulse splitting and X-wave formation within femtosecond laser pulse filamentation leads to the formation of constant-CEP within well-defined regions inside the filament. We study the creation of constant-CEP pulses in both gasseous and condensed media showing that this is a generic feature of filaments. (C) 2008 Optical Society of America.
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