Spatio-temporal ultrafast pulse shaping at the femtosecond–nanometer scale

Shlomi Korman*, Eyal Bahar, Uri Arieli, Haim Suchowski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Optical pulse shaping is a fundamental tool for coherent control of the light–matter interaction. While such control enables the measurement of ultrafast temporal dynamics, simultaneous spatiotemporal control is required for studying non-local ultrafast charge dynamics at the nanoscale. However, obtaining accurate spatial control at a sub-wavelength resolution with conventional optical elements poses significant difficulty. Here, we use the spatiotemporal coupling naturally arising in a spatial light modulator based pulse shaping apparatus to achieve accurate control with femto–nano spatiotemporal resolution. We experimentally demonstrate spatial steering at the sub-micron scale of second harmonic generation from nanostructures. In addition, we apply an absolute-value spectral phase to achieve controlled double pulses for nanoscale excitation. We introduce a novel, to the best of our knowledge, scheme for accurate tunable spatiotemporal pump–probe experiments. This method offers rich insight into materials with ultrafast transport phenomena at the femtosecond–nanometer regimes.

Original languageEnglish
Pages (from-to)4279-4282
Number of pages4
JournalOptics Letters
Issue number17
StatePublished - 15 Aug 2022


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