Coherent control of optical spin–orbit interactions

Optical spin-orbit interactions (SOI) are an intriguing physical phenomenon where the spin (circular polarization) of light influences and governs its spatial degrees of freedom. Yet, achieving real-time and flexible control over SOI remains a formidable challenge. Here, we propose a coherent control method for the flexible manipulation of optical SOI using a thin isotropic crystal. The output horizontally and vertically polarized waves from the crystal exhibit strong and distinct dependencies on the phase delay between the input signal and control waves, leading to substantial spin-orbit beam shifts. By tuning the relative phase between the signal beam and the control beam, we observe transitions from Gaussian to first-order orbital angular momentum (OAM) vortex modes. The achievable transition speed reaches 11.5 GHz, currently limited by the phase modulator in the control arm. Notably, the dual-port architecture offers coherent and reversible selection of spin–OAM states, with the out..., , , # Coherent control of optical spin–orbit interactions

Dataset DOI: [10.5061/dryad.fqz612k5z](https://doi.org/10.5061/dryad.fqz612k5z)

## Description of the data and file structure

\> Dataset Description

\> This dataset supports the findings in the manuscript titled \"Coherent Control of Optical Spin–Orbit Interactions\". The data files provided correspond to the experimental and theoretical results presented in Figures 2, 3, 4, 5, and 6 of the main manuscript. The dataset covers the characterization of the coherent spin-orbit interaction (SOI) effects, including reflection/transmission spectra, phase calculations, spin-orbit beam shifts, system bandwidth, and high-speed optical switching performance.

### Files and variables

#### File: dataset.zip

##### File Formats and Access

* **File Extension**: `.csv` (Comma Separated Values)
* **How to Open**: These files are standard text-based data files. They can be opened and viewed using any text editor (e.g., Notepad, TextEdit), spreadsh...