activity
20092026
most citedStudy of energy backflow in unidirectional monochromatic and space-time waves

12 citations · 14 across the 5 of their papers we have counts for

collaborators

5 papers

physics.optics2026

Orbital and spin current density backflow in unidirectional monochromatic electromagnetic fields in vacuum

Peeter Saari, Ioannis Besieris

In this study, energy backflow in the Poynting vector, as well as its orbital and spin current density components, has been examined for a 2-dimensional causal unidirectional vecto…

math-ph2025★ 2 cited

Wave pulses with unusual asymptotical behavior at infinity

Peeter Saari, Ioannis Besieris

The behavior of wave signals in the far zone is not only of theoretical interest but also of paramount practical importance in communications and other fields of applications of op…

physics.optics2024★ 12 cited

Study of energy backflow in unidirectional monochromatic and space-time waves

Peeter Saari, Ioannis Besieris

Backflow, or retropropagation, is a counterintuitive phenomenon whereby for a forward-propagating wave the energy locally propagates backward. In the context of backflow, physicall…

physics.optics2024

Matters Arising: On physical nature of the optical deDroglie-Mackinnon wave packets. ARISING FROM Layton A. Hall and Ayman F. Abouraddy Nature Physics https://doi.org/10.1038/s41567-022-01876-6 (2023)

Peeter Saari, Ioannis M. Besieris

Hall and Abouraddy [1] have reported first experimental observation of optical de Broglie-Mackinnon wave packets, which is a seminal achievement in the study of so-called non-diffr…

physics.optics2009

Measuring the spatio-temporal field of diffracting ultrashort pulses

P. Bowlan, M. Lohmus, P. Piksarv +3

Using SEA TADPOLE, we directly measure the spatio-temporal field of diffracting ultrashort pulses with femtosecond temporal and micrometer spatial resolutions. Using a circular ape…