Abstract

We present a technique for the single-shot measurement of the spatiotemporal (1D ${\rm space} + {\rm time}$) amplitude and phase of an ultrashort laser pulse. The method, transient grating single-shot supercontinuum spectral interferometry (TG-SSSI), is demonstrated by the space–time imaging of short pulses carrying spatiotemporal optical vortices. TG-SSSI is well suited for characterizing ultrashort laser pulses that contain singularities associated with spin/orbital angular momentum or polarization.

© 2021 Optical Society of America

Second-harmonic generation of spatiotemporal optical vortices and conservation of orbital angular momentum

S. W. Hancock, S. Zahedpour, and H. M. Milchberg
Optica 8(5) 594-597 (2021)

Free-space propagation of spatiotemporal optical vortices

S. W. Hancock, S. Zahedpour, A. Goffin, and H. M. Milchberg
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