AI Article Synopsis
- - The study explores the use of a 0-π square-wave phase grating to manipulate femtosecond laser pulses (1350 nm and 1450 nm) to produce two strong focused beams.
- - The phase difference between the two created beams can be easily adjusted by moving the grating, allowing for precise control.
- - High harmonic generation is achieved from the two bright lobes, and the researchers observe the interference patterns produced at various harmonic orders, up to the 53rd order.
Article Abstract
In this Letter, we use a 0-π square-wave phase grating to shape 1350 nm and 1450 nm femtosecond pulses and create two intense lobes at the focus of a lens. We show that the relative phase between these two lobes (the 1st and -1st orders of diffraction of the grating) is controlled very simply and precisely by shifting the position of the grating in its plane. We generate high harmonic orders from the two bright lobes and record the beating between the two emissions for each harmonic order up to the 53rd harmonic order.
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| http://dx.doi.org/10.1364/OL.44.005465 | DOI Listing |
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