中国物理B ›› 2010, Vol. 19 ›› Issue (1): 14212-014212.doi: 10.1088/1674-1056/19/1/014212

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Mechanism and elimination of spectrum filtering in a high power mode-locked fibre laser witha free output coupler

张玉颖, 张驰, 胡明列, 王思佳, 宋有建, 柴路, 王清月   

  1. Ultrafast Laser Lab, School of Precision Instruments and Optoelectronics Engineering, Key Laboratory of Optoelectronic Information Technical Science, Tianjin University, Tianjin 300072, China
  • 收稿日期:2009-06-11 修回日期:2009-06-24 出版日期:2010-01-15 发布日期:2010-01-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos.~2006CB806002 and 2010CB327604), the National High Technology Research and Development Program of China (Grant No.~2007AA03Z447), the National Natural Science Foundation of China (Grant Nos.~60838004 and 60678012), the Foundation for Key Program of Ministry of Education, China (Grant No.~108032), the Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No.~2007B34), and the Program for New Century Excellent Talents in University of China (Grant No.~NCET-07-0597).

Mechanism and elimination of spectrum filtering in a high power mode-locked fibre laser witha free output coupler

Zhang Yu-Ying(张玉颖), Zhang Chi(张驰), Hu Ming-Lie(胡明列)†, Wang Si-Jia(王思佳), Song You-Jian(宋有建), Chai Lu(柴路), and Wang Qing-Yue(王清月)   

  1. Ultrafast Laser Lab, School of Precision Instruments and Optoelectronics Engineering, Key Laboratory of Optoelectronic Information Technical Science, Tianjin University, Tianjin 300072, China
  • Received:2009-06-11 Revised:2009-06-24 Online:2010-01-15 Published:2010-01-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos.~2006CB806002 and 2010CB327604), the National High Technology Research and Development Program of China (Grant No.~2007AA03Z447), the National Natural Science Foundation of China (Grant Nos.~60838004 and 60678012), the Foundation for Key Program of Ministry of Education, China (Grant No.~108032), the Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No.~2007B34), and the Program for New Century Excellent Talents in University of China (Grant No.~NCET-07-0597).

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摘要： The filtering mechanism of a free output coupler mode-locked laser based on large-mode-area photonic-crystal fibre is analysed. A filtering-soliton mode-locked laser with 495~fs pulse width and 21 nJ pulse energy is achieved. Another novel cavity configuration is established to eliminate the filtering effect. Pulses, each 457~fs in width and 16.5 nJ in energy, are obtained in a soliton-like regime. Pulses, each 387~fs in width and 15.8 nJ in energy, are also generated in a stretched pulse regime and could be dechirped to 119~fs externally to the cavity.

Abstract: The filtering mechanism of a free output coupler mode-locked laser based on large-mode-area photonic-crystal fibre is analysed. A filtering-soliton mode-locked laser with 495 fs pulse width and 21 nJ pulse energy is achieved. Another novel cavity configuration is established to eliminate the filtering effect. Pulses, each 457 fs in width and 16.5 nJ in energy, are obtained in a soliton-like regime. Pulses, each 387 fs in width and 15.8 nJ in energy, are also generated in a stretched pulse regime and could be dechirped to 119 fs externally to the cavity.

Key words: femtosecond laser, mode-locked laser, fibre laser, large-mode-area photonic-crystal fibre

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.60.Fc (Modulation, tuning, and mode locking) 42.65.Tg (Optical solitons; nonlinear guided waves) 42.81.Dp (Propagation, scattering, and losses; solitons) 42.81.Qb (Fiber waveguides, couplers, and arrays)