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Showing 1 to 1 of 1 for “"apertured beam"”.
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Direct Observation of Laser Filamentation in High-Order Harmonic Generation
… an aperture is partially closed on the laser beam before reaching the focusing mirror. A spectral sampling of the imaged laser focus revealed a 4 nm blue-shift associated with the generation of plasma in the gas cell. The blue-shifting occurs primarily in the center of the laser beam and less …