575-fs passively mode-locked Yb∶CaF2 ceramic laser

• 作者: Bing-Chu Mei Cong Wang Da-Peng Jiang Hai-Jun Huang Jie Liu Liang-Bi Su Qian-Qian Hao Shao-Zhao Wang Wei-Wei Li
• 来源期刊: 中国物理B（英文版）
• 关键词: mode-locking tunable transparent ceramics solid-state lasers
• 年，卷（期）: 2020,（7）
• 页码范围: 372-377
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab8ac5

摘要

A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied.A broad tuning performance and mode-locked laser operation were demonstrated in this ceramics for the first time,to our best knowledge.A 60-nm continuous-wavelength tunable laser from 1019 nm to 1079 nm was obtained with a birefringent filter.By employing a semiconductor saturable absorber mirror without additional dispersion compensation elements,a continuous-wave mode-locked laser with pulse duration as short as 575 fs was delivered,at a central wavelength of 1048.5 nm.The oscillator is operated under a repetition rate of 55 MHz.These results indicate that the Yb∶CaF2 transparent ceramics is an ideal candidate for the development of ultrafast lasers in the near-infrared regime.