High‐Power Ultrafast Optical Vortex Generation from a Dual‐Cavity Thin‐Disk Laser via Polarization‐Splitting Mode Control

Abstract High‐power, high‐energy ultrafast vortex lasers offer significant potential across a wide range of applications. This study introduces a novel and adaptable method for generating high‐power picosecond vortices using a dual‐cavity thin‐disk regenerative amplifier via polarization splitting. The design enables precise, real‐time control of vortex mode purity via dynamic modulation of mode competition within the polarization‐splitting cavities. The amplifier produces high‐purity picosecond vortex pulses, delivering an average power of 102 W and a pulse energy of 1.02 mJ at a repetition rate of 100 kHz. A comprehensive 2D rate‐equation model is developed to investigate system dynamics and determine optimal operating parameters. This approach offers a robust, scalable, and versatile platform for generating high‐power ultrafast Laguerre–Gaussian vortex pulses with precise mode control, providing a strong foundation for the development of next‐generation intelligent vortex laser systems.