Fig. 3: Theoretical and experimental results for the generated 2D ST Airy wavepacket.
From: Tailoring spatiotemporal wavepackets via two-dimensional space-time duality
a Intensity distribution of the generated 2D Airy wavepacket in the \(x-\tau\) plane and its projections along the \(x\)- and \(\tau\)- axes. b The acceleration effect of the generated 2D Airy wavepacket in the \(x\)-axis. c Same as (b) but in the \(\tau\)-axis. Note that due to the breaking of 2D space-time duality symmetry in free space (\({\beta }_{2}=0\)), no temporal acceleration is observed for the Airy wavepacket; simulation results indicate that the temporal acceleration of the Airy wavepacket can be controlled by material dispersion, especially when \({\beta }_{2}=\left|{\beta }_{2}^{ * }\right|\), at which point its temporal acceleration profile will resemble the spatial acceleration profile.
