OAM-mode sorting with a wavefront twister
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917450673553408 |
|---|---|
| author | Karan, Suman Chaudhary, Swati Wanare, Harshwardhan Jha, Anand Kumar |
| author_facet | Karan, Suman Chaudhary, Swati Wanare, Harshwardhan Jha, Anand Kumar |
| contents | We propose an OAM sorter based on a novel optical element that we refer to as a wavefront twister. It is a generalization of the conventional wavefront rotators such as the Dove prism. However, unlike a Dove prism, which simply rotates a wavefront, the rotation generated by a wavefront twister varies linearly with radial position, resulting in the twisting of the wavefront. We demonstrate that the wavefront twister, followed by a lens, maps each OAM mode to an annulus of distinct radius at the back focal plane of the lens with negligible inter-modal overlap and preserves the circular symmetry. Thus, the proposed wavefront twister offers a scalable scheme for high-dimensional OAM mode sorting, with important consequences for the practical realization of OAM-based applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_27739 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | OAM-mode sorting with a wavefront twister Karan, Suman Chaudhary, Swati Wanare, Harshwardhan Jha, Anand Kumar Optics Quantum Physics We propose an OAM sorter based on a novel optical element that we refer to as a wavefront twister. It is a generalization of the conventional wavefront rotators such as the Dove prism. However, unlike a Dove prism, which simply rotates a wavefront, the rotation generated by a wavefront twister varies linearly with radial position, resulting in the twisting of the wavefront. We demonstrate that the wavefront twister, followed by a lens, maps each OAM mode to an annulus of distinct radius at the back focal plane of the lens with negligible inter-modal overlap and preserves the circular symmetry. Thus, the proposed wavefront twister offers a scalable scheme for high-dimensional OAM mode sorting, with important consequences for the practical realization of OAM-based applications. |
| title | OAM-mode sorting with a wavefront twister |
| topic | Optics Quantum Physics |
| url | https://arxiv.org/abs/2604.27739 |