Chinese Optics Letters, Vol. 16, Issue 11, 111401 (2018)
44.6 fs pulses from a 257 MHz Er:fiber laser mode-locked by biased NALM
Wanli Gao*, Guanyu Liu, and Zhigang Zhang
- State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
44.6 fs pulses from a 257 MHz, mode-locked non-polarization maintaining Er-doped fiber laser based on a biased nonlinear amplifying loop mirror are reported. The output power is 104 mW and the single-pulse energy is 0.4 nJ. The minimum pulse duration of the direct output is 44.6 fs, which is the shortest in this kind of laser.