Journal
OPTICS LETTERS
Volume 46, Issue 11, Pages 2758-2761Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.426124
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [11874269, 61875133]
- Natural Science Foundation of Guangdong Province [2018A030313198]
Ask authors/readers for more resources
In general, a spin-polarized light beam cannot couple its spin angular momentum (SAM) with intrinsic orbital angular momentum (IOAM) without spin reversal. However, it has been found that nonlinear media can give the spin-polarized photon an IOAM without requiring spin reversal. This phenomenon is characterized by an evolution ray equation for photons carrying IOAM, and the vortex generation is shown to originate from the nonlinear-induced geometric phase.
In general, a spin-polarized light beam cannot couple its spin angular momentum (SAM) with intrinsic orbital angular momentum (IOAM) without spin reversal. Here we find that nonlinear media can give the spin-polarized photon an IOAM, as they travel in the media due to the nonlinear susceptibility along the transmission direction, which does not require spin reversal. To characterize this SAM-to-IOAM conversion process, we establish an evolution ray equation for photons carrying IOAM by reference to the Schrodinger equation. We further reveal the inherent physics of such a phenomenon from a full-wave perspective and find that the vortex generation originates from the nonlinear-induced geometric phase. (C) 2021 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available