Generate Spatiotemporal Optical Vortex with 4f Pulse Shaper

simulation of STOV generation via a 4f pulse shaper with a spiral phase mask

1、This MATLAB code simulates the generation of Spatiotemporal Optical Vortices (STOVs) using a standard 4f pulse shaping system. The simulation follows the complete optical path, including:

• Grating dispersion for spectral decomposition
• Cylindrical lens focusing in the Fourier plane
• Spiral phase mask application for STOV creation
• Backward propagation through the symmetric system

2、During simulations with the grating at the Littrow angle, the phase singularity line of the generated STOV exhibits a slight tilt . The question that when the incident angle deviates from the Littrow configuration, the tilt angle increases significantly， has been solved.And I hope that this code can help beginners quickly learn and master the relevant concepts.

Tips:This code is also publicly available at other websites：“https://www.zhihu.com/question/1992282895633643198”.So there are no conflicts of interest.