中国物理B ›› 2009, Vol. 18 ›› Issue (5): 1996-2001.doi: 10.1088/1674-1056/18/5/044

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Efficient frequency upshift of 10fs laser pulsespropagating in a 5-cm length birefringent photonic crystal fibre

周桂耀1, 侯蓝田1, 张炜2, 魏志义2, 李曙光3   

  1. (1)Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China; (2)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (3)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2008-08-24 修回日期:2008-11-09 出版日期:2009-05-20 发布日期:2009-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10874145 and 60490280), the China Postdoctoral Science Foundation (Grant No 20080440014), and the Yanshan University Doctor Foundation of China (Grant No B153).

Efficient frequency upshift of 10fs laser pulses propagating in a 5-cm length birefringent photonic crystal fibre

Li Shu-Guang(李曙光)a)b)†, Zhang Wei(张炜)a), Wei Zhi-Yi(魏志义)a), Zhou Gui-Yao(周桂耀)b), and Hou Lan-Tian(侯蓝田)b)   

  1. a Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • Received:2008-08-24 Revised:2008-11-09 Online:2009-05-20 Published:2009-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10874145 and 60490280), the China Postdoctoral Science Foundation (Grant No 20080440014), and the Yanshan University Doctor Foundation of China (Grant No B153).

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摘要： This paper reports that a 5-cm length birefringent photonic crystal fibre is used to tune the output frequency of unamplified 10-fs Ti:sapphire pulses. The zero dispersion of the fibre is at 823~nm and 800~nm for slow and fast fundamental modes, respectively. It is demonstrated that efficient upshift of the output frequency can be achieved when the pumped radiation is polarized along the slow axis of the fibre. When the average input power reaches 320~mW, about 60% of the output energy is located in one peak at 600~nm and is accompanied by depletion of the pulse inside the anomalous dispersion region.

关键词: birefringent photonic crystal fibre, femtosecond laser pulses, frequency upshift

Abstract: This paper reports that a 5-cm length birefringent photonic crystal fibre is used to tune the output frequency of unamplified 10-fs Ti:sapphire pulses. The zero dispersion of the fibre is at 823 nm and 800 nm for slow and fast fundamental modes, respectively. It is demonstrated that efficient upshift of the output frequency can be achieved when the pumped radiation is polarized along the slow axis of the fibre. When the average input power reaches 320 mW, about 60% of the output energy is located in one peak at 600 nm and is accompanied by depletion of the pulse inside the anomalous dispersion region.

Key words: birefringent photonic crystal fibre, femtosecond laser pulses, frequency upshift

中图分类号:  (Photonic crystal lasers and coherent effects)

  • 42.55.Tv
42.81.Dp (Propagation, scattering, and losses; solitons) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.81.Gs (Birefringence, polarization)