光学
物理
镜头(地质)
旋涡
赫米特多项式
模式锁定
高斯分布
涡流
自相位调制
模式(计算机接口)
高斯光束
克尔效应
非线性光学
梁(结构)
量子力学
激光器
非线性系统
计算机科学
操作系统
热力学
作者
Fan Wu,Heyan Liu,Lisong Yan,Бо Лю,Qingzhe Cui,Kunjian Dai,H. J. Li,Yingxiong Qin,Qing Wang,Jinwei Zhang
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-09-19
卷期号:49 (20): 5747-5747
摘要
Mode-locked oscillators with high-order transverse modes are excellent platforms for generating femtosecond optical vortices with high average power and good propagation stability. These have important applications in diverse fields such as optical communication, strong-field physics, and laser processing. So far, generating vortex pulses with ultrashort pulse duration remains a challenge. In this Letter, we report a Kerr-lens mode-locked Yb:CALGO laser oscillator delivering Hermite–Gaussian (HG) pulses with a pulse duration of 86 fs using a non-collinear pumping technique. 91 fs optical vortex pulses were generated by using a cylindrical-lens mode converter. To the best of our knowledge, this is the shortest pulse duration ever obtained from a diode pumped solid-state mode-locked oscillator with a pure high-order Hermite–Gaussian mode. The phase structures of the generated femtosecond vortices are characterized.
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