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High pulse energy mode-locked multicore photonic crystal fiber laser
Authors:Fang Xiaohui  Hu Minglie  Xie Chen  Song Youjian  Chai Lu  Wang Chingyue
Affiliation:Key Laboratory of Opto-Electronic Information Science and Technology of Ministry of Education, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin, China.
Abstract:A high pulse energy passively mode-locked fiber laser operating in the all-normal dispersion regime is demonstrated. The gain material is an Yb-doped multicore photonic crystal fiber with 18 cores in array-type geometry. Robust and self-starting mode locking is achieved using a fast semiconductor saturable absorber mirror. The laser generates 180?nJ chirped pulses at a 14.48?MHz repetition rate for an average power of 2.6?W. The 1.15?ps output pulses are compressed to 690?fs outside the cavity.
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