Twisting light in 4D: Helical wave packets with unique properties

Michael De Oliveira; Antonio Ambrosio

doi:10.1117/12.3016785

11 June 2024 Twisting light in 4D: Helical wave packets with unique properties

Michael De Oliveira, Antonio Ambrosio

Proceedings Volume PC12991, Nanophotonics X; PC129910N (2024) https://doi.org/10.1117/12.3016785
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We demonstrate the coherent manipulation of the spatial and temporal properties of ultrashort pulsed laser beams to generate wave packets that trace helical trajectories in space-time. This is achieved by introducing a non-separable correlation between the beam’s frequency (related to its temporal structure) and its orbital angular momentum (that defines its spatial topology). The demonstration relies on a diffractive axicon grating to separate the frequencies of a pulsed beam into colinear radial rings which are then independently modulated with an azimuthal phase using a digital spatial light modulator. The all-digital setup allows to tailor the topological-spectral correlations, affording control over a range of beam properties, while more complex correlations realize exotic space-time wave packets with extended beam dynamics. These unique beams open new horizons in ultrafast light-matter interactions, microscopy and multiplexing.

Conference Presentation

Citation Download Citation

Michael De Oliveira and Antonio Ambrosio "Twisting light in 4D: Helical wave packets with unique properties", Proc. SPIE PC12991, Nanophotonics X, PC129910N (11 June 2024); https://doi.org/10.1117/12.3016785

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available