Tunable femtosecond pulse source from 1.6 to 2.3 μm with 100 kW peak power in an all-fiber system

• 作 者: 王鹏 师红星 谭方舟 王璞
• 机 构: National Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technolog
• 出 处: Chinese Optics Letters
• 发表日期: 2016年09期
• 关键词: tunable pumped soliton utilizing locked amplify amplifier exceptional capable ge

We report a simple and compact all-fiber laser system that is capable of generating widely tunable femtosecond pulses from 1.6 to 2.32 μm. The pulses are produced by utilizing the soliton self-frequency shift in a highly nonlinear fiber pumped by an Er-doped mode-locked fiber laser. Two stages of single-clad Tm:fiber amplifiers are used to amplify the pulses to a higher pulse energy of 10.9 n J with pulse width of 94 fs, and corresponding to peak power of 105 kW at around 1.93 μm. Running a few hours, the all-fiber laser system exhibits exceptional stability with a signal-to-noise ratio as high as 70 dB.

We report a simple and compact all-fiber laser system that is capable of generating widely tunable femtosecond pulses from 1.6 to 2.32 μm. The pulses are produced by utilizing the soliton self-frequency shift in a highly nonlinear fiber pumped by an Er-doped mode -locked fiber laser. Two stages of single-clad Tm: fiber amplifiers are used to amplify the pulses to a higher pulse energy of 10.9 n J with pulse width of 94 fs, and corresponding to peak power of 105 kW at around 1.93 μm. Running a few hours, the all-fiber laser system exhibits exceptional stability with a signal-to-noise ratio as high as 70 dB.