Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M03: Chiral Molecules and Chiral Light
2:00 PM–4:00 PM,
Wednesday, June 2, 2021
Chair: Jean Marcel Ngoko Djiokap, University of Nebraska - Lincoln
Abstract: M03.00009 : Mode structure and orbital angular momentum of spatiotemporal optical vortex (STOV) pulses*
3:36 PM–3:48 PM
On Demand
Presenter:
Scott Hancock
Authors:
Scott Hancock
Sina Zahedpour Anaraki
(University of Maryland, College Park)
Howard M Milchberg
(University of Maryland, College Park)
In this work we identify a class of modal solutions for STOVs propagating in vacuum and dispersive media. These results show that STOVs can carry half-integer units of intrinsic OAM in vacuum. The results are in excellent agreement with our experiments [2,3]. In a dispersive medium, a STOV-carrying pulse is accompanied by a half-integer polariton-like quasiparticle with STOV OAM, which we call a “STOV polariton”. Spatiotemporal phase circulation about a STOV singularity suggests that single-valuedness of states under spacetime coordinate rotations in a boosted frame is not a constraint for electromagnetic fields [3].
[1] N. Jhajj, I. Larkin, E. Rosenthal, S. Zahedpour, J. K. Wahlstrand, and H. M. Milchberg, Phys. Rev. X. 6, 031037 (2016).
[2] S. W. Hancock, S. Zahedpour, A. Goffin, and H. M. Milchberg, Optica 6, 1547 (2019).
[3] S. W. Hancock, S. Zahedpour, and H. M. Milchberg, under review.
*This work is supported by the Air Force Office of Scientific Research (FA9550-16-1-0121, FA9550-16-1-0284), the Office of Naval Research (N00014-17-1-2705, N00014-20-1-2233), and the National Science Foundation (PHY2010511);
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