Abstract

Herein, we demonstrate the generation of optical vortex arrays pulses using a Sagnac common-path interferometric vortex generator. Hermite–Gaussian (HG) modes with different orders are initially obtained from a SESAM mode-locked laser in the positive dispersion regime. Then, in the interferometric vortex generator, by controlling the phase difference and sheering displacement between two HG modes, optical vortex pulses with different numbers of phase singularities are generated through superposition. The generated HG₁₀ mode has a pulse width of 2 ps and maximum energy of 0.75 nJ. One-dimensional vortex arrays and triangular vortex arrays are also generated, which are formed by HG_m0 and HG_0n modes, respectively. This work has potential applications in the massive manipulation of microparticles, optical communication, and so on.

© 2023 Optica Publishing Group

High-power femtosecond vortices generated from a Kerr-lens mode-locked solid-state Hermite–Gaussian oscillator

Zijun Peng, Qing Wang, Hongshan Chen, Hongyu Liu, Xin Liu, Lisong Yan, and Jinwei Zhang
Opt. Lett. 48(10) 2708-2711 (2023)

Generation of a vortex point adjustable vortex array based on decentered annular beam pumping

Kongtao Chen, Lixu Xu, Aodong Ni, Jiale Tang, Kaiwen Yi, Fuqiang Jia, Dun Qiao, Kang Li, and Nigel Copner
Opt. Lett. 48(10) 2599-2602 (2023)

Controlling an optical vortex array from a vortex phase plate, mode converter, and spatial light modulator

T. D. Huang and T. H. Lu
Opt. Lett. 44(16) 3917-3920 (2019)

Controlled generation of ultrafast vector vortex beams from a mode-locked fiber laser

Kun Huang, Jing Zeng, Jiwei Gan, Qiang Hao, and Heping Zeng
Opt. Lett. 43(16) 3933-3936 (2018)

Generation of femtosecond optical vortices with multiple separate phase singularities from a Kerr-lens mode-locked Yb:KGW oscillator

Xin Liu, Lisong Yan, Hongshan Chen, Heyan Liu, Hongyu Liu, Qing Wang, and Jinwei Zhang
Opt. Express 31(24) 39738-39746 (2023)