Self-starting harmonic mode-locked Tm-Bi co-doped germanate fiber laser with carbon nanotube-based saturable absorber

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 81-83
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201311.063201

摘要

We report a ring cavity passively harmonic mode-locked fiber laser using a newly developed thuliumbismuth co-doped fiber (TBF) as a gain medium in conjunction with a carbon nanotube (CNT)-based saturable absorber.The TBF laser generates a third harmonic mode-locked soliton pulse train with a high repetition rate of 50 MHz and a pulse duration of 1.86 ps.The laser operates at 1 901.6 nm with an average power of 6.6 mW,corresponding to a pulse energy of 0.132 n J,at a 1 552 nm pump power of 723.3 mW.