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arXiv · 2212.12091

Ultra-compact synthesis of space-time wave packets

Murat Yessenov·Oussama Mhibik·Lam Mach·Tina M. Hayward·Rajesh Menon·Leonid Glebov·Ivan Divliansky·Ayman F. Abouraddy
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Abstract

Space-time wave packets (STWPs) are pulsed fields in which a strictly prescribed association between the spatial and temporal frequencies yields surprising and useful behavior. However, STWPs to date have been synthesized using bulky free-space optical systems that require precise alignment. We describe a compact system that makes use of a novel optical component: a chirped volume Bragg grating that is rotated by 45 degrees with respect to the plane-parallel device facets. By virtue of this grating's unique structure, cascaded gratings resolve and recombine the spectrum without free-space propagation or collimation. We produce STWPs by placing a phase plate that spatially modulates the resolved spectrum between such cascaded gratings, with a device volume of 25x25x8 mm3, which is orders of magnitude smaller than previous arrangements.

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Murat Yessenov, Oussama Mhibik, Lam Mach, Tina M. Hayward, Rajesh Menon, Leonid Glebov, Ivan Divliansky, Ayman F. Abouraddy. 2022-12-23. Ultra-compact synthesis of space-time wave packets. https://doi.org/10.1364/ol.483902

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