High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser.

ABSTRACT: Femtosecond vortex beams are of great scientific and practical interest because of their unique phase properties in both the longitudinal and transverse modes, enabling multi-dimensional quantum control of light fields. Until now, generating femtosecond vortex beams for applications that simultaneously require ultrashort pulse duration, high power, high vortex order, and a low cost and compact laser source has been very challenging due to the limitations of available generation methods. Here, we present a compact apparatus that generates powerful high-order femtosecond vortex pulses via astigmatic mode conversion from a mode-locked Hermite-Gaussian Yb:KGW laser oscillator in a hybrid scheme using both the translation-based off-axis pumping and the angle-based non-collinear pumping techniqu

SUBMITTER: Liu H 

PROVIDER: S-EPMC10469186 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature