Second-harmonic generation of spatiotemporal optical vortices and conservation of orbital angular momentum
Abstract
A spatiotemporal optical vortex (STOV) is an intrinsic optical orbital angular momentum (OAM) structure in which the OAM vector is orthogonal to the propagation direction [Optica 6, 1547 (2019)OPTIC82334-253610.1364/OPTICA.6.001547] and the optical phase circulates in space-time. Here, we experimentally and theoretically demonstrate the generation of the second harmonic of a STOV-carrying pulse along with the conservation of STOV-based OAM. Our experiments verify that photons can have intrinsic orbital angular momentum perpendicular to their propagation direction.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 27, 2021
- Source ID
- 10.1364/optica.422743
Entities
People
- Howard Milchberg
- S. W. Hancock
- S. Zahedpour
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- Office of Naval Research
- University of Maryland