中国物理B ›› 2014, Vol. 23 ›› Issue (5): 54208-054208.doi: 10.1088/1674-1056/23/5/054208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

A novel 2-μm pulsed fiber laser based on a supercontinuum source and its application to mid-infrared supercontinuum generation

杨未强, 张斌, 侯静, 殷科, 刘泽金   

  1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2013-08-08 修回日期:2013-10-14 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61235008 and 61077076).

A novel 2-μm pulsed fiber laser based on a supercontinuum source and its application to mid-infrared supercontinuum generation

Yang Wei-Qiang (杨未强), Zhang Bin (张斌), Hou Jing (侯静), Yin Ke (殷科), Liu Ze-Jin (刘泽金)   

  1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2013-08-08 Revised:2013-10-14 Online:2014-05-15 Published:2014-05-15
  • Contact: Hou Jing E-mail:houjing25@sina.com
  • About author:42.55.Wd; 42.65.-K; 42.65.Ky
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61235008 and 61077076).

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摘要： A new method to achieve 2-μm pulsed fiber lasers based on a supercontinuum (SC) is demonstrated. The incident pump light is a pulsed SC which contains a pump light and a signal light at the same time. The initial signal of the seed laser is provided by the incident pump light and amplified in the cavity. Based on this, we obtain a 2-μm pulsed laser with pulse repetition rate of 50 kHz and pulse width of 2 ns from the Tm-doped fiber laser. This 2-μm pulsed laser is amplified by two stages of fiber amplifiers, then the amplified laser is used for mid-infrared (mid-IR) SC generation in a 10-m length of ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fiber. An all-fiber-integrated mid-IR SC with spectrum ranging from 1.8 μm to 4.3 μm is achieved. The maximal average output power of the mid-IR SC from the ZBLAN fiber is 1.24 W (average output power beyond 2.5 μm is 340 mW), corresponding to an output efficiency of 6.6% with respect to the 790-nm pump power.

关键词: fiber laser, supercontinuum, mid-infrared, ZBLAN fiber

Abstract: A new method to achieve 2-μm pulsed fiber lasers based on a supercontinuum (SC) is demonstrated. The incident pump light is a pulsed SC which contains a pump light and a signal light at the same time. The initial signal of the seed laser is provided by the incident pump light and amplified in the cavity. Based on this, we obtain a 2-μm pulsed laser with pulse repetition rate of 50 kHz and pulse width of 2 ns from the Tm-doped fiber laser. This 2-μm pulsed laser is amplified by two stages of fiber amplifiers, then the amplified laser is used for mid-infrared (mid-IR) SC generation in a 10-m length of ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fiber. An all-fiber-integrated mid-IR SC with spectrum ranging from 1.8 μm to 4.3 μm is achieved. The maximal average output power of the mid-IR SC from the ZBLAN fiber is 1.24 W (average output power beyond 2.5 μm is 340 mW), corresponding to an output efficiency of 6.6% with respect to the 790-nm pump power.

Key words: fiber laser, supercontinuum, mid-infrared, ZBLAN fiber

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.65.-k (Nonlinear optics) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)