Sb2Te3 mode-locked ultrafast fiber laser at 1.93 μm

• 来源期刊: 中国物理B（英文版）
• 关键词: fiber lasers mode locking nonlinear optical material
• 年，卷（期）: 2018,（8）
• 页码范围: 13-18
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/8/084214

摘要

Ultrafast pulse generation was demonstrated in thulium doped fiber laser mode locked by magnetron sputtering de-posited Sb2Te3 with the modulation depth, non-saturable loss, and saturable intensity of 38％, 31.2％, and 3.3 MW/cm2, respectively. Stable soliton pulses emitting at 1930.07 nm were obtained with pulse duration of 1.24 ps, a 3-dB spectral bandwidth of 3.87 nm, an average output power of 130 mW, and signal-to-noise ratio (SNR) of 84 dB. To our knowledge, this is the first demonstration of Sb2Te3-based SA in fiber lasers at 2-μm regime.