We report on the use of a novel technique to create a plasma waveguide suitable for guiding high-intensity laser pulses in underdense plasmas. A narrow channel of a clustering gas is dissociated with a low-intensity prepulse. This prepulse is followed by a high-intensity, focused laser pulse. The high absorption of the clusters surrounding the dissociated atomic channel causes the remaining annulus of clusters to become highly ionized, leaving low-density plasma in the center. We have interferometrically probed the formation of this channel with picosecond laser pulses.
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| http://dx.doi.org/10.1364/ol.23.000322 | DOI Listing |
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Article Synopsis
- - We explore how transverse electric (TE) and transverse magnetic (TM) modes behave in a unique waveguide design called the Piet Hein cross-section, which is filled with semiconductor quantum plasma.
- - Through analytical and numerical analysis, we discover that the TE and TM modes display interesting patterns in their electric and magnetic fields, including areas of high and low intensity, influenced by the waveguide's geometry and material properties.
- - Our study reveals potential applications for improving photonic devices, leveraging the unique modal behaviors and energy dynamics presented by the Piet Hein waveguide structure.
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