中国物理B ›› 2015, Vol. 24 ›› Issue (8): 84207-084207.doi: 10.1088/1674-1056/24/8/084207

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

Effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier

宋锐, 雷成敏, 陈胜平, 王泽锋, 侯静   

  1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2015-01-06 修回日期:2015-01-27 出版日期:2015-08-05 发布日期:2015-08-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11404404 and 11274385) and the Outstanding Youth Fund Project of Hunan Province and the Fund of Innovation of National University of Defense Technology, China (Grant No. B120701).

Effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier

Song Rui (宋锐), Lei Cheng-Min (雷成敏), Chen Sheng-Ping (陈胜平), Wang Ze-Feng (王泽锋), Hou Jing (侯静)   

  1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2015-01-06 Revised:2015-01-27 Online:2015-08-05 Published:2015-08-05
  • Contact: Song Rui E-mail:srnotice@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11404404 and 11274385) and the Outstanding Youth Fund Project of Hunan Province and the Fund of Innovation of National University of Defense Technology, China (Grant No. B120701).

摘要: The effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier is investigated theoretically and experimentally. The complex Ginzburg–Landau equation and adaptive split-step Fourier method are used to simulate the propagation of pulses with different pulse widths in the fiber amplifier, and the results show that a longer pulse is more profitable in near-infrared supercontinuum generation if the central wavelength of the input laser lies in the normal dispersion region of the gain fiber. A four-stage master oscillator power amplifier configuration is adopted and the output spectra under picosecond and nanosecond input pulses are compared with each other. The experimental results are in good accordance with the simulations which can provide some guidance for further optimization of the system.

关键词: fiber laser, supercontinuum, pulse width, fiber amplifier

Abstract: The effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier is investigated theoretically and experimentally. The complex Ginzburg–Landau equation and adaptive split-step Fourier method are used to simulate the propagation of pulses with different pulse widths in the fiber amplifier, and the results show that a longer pulse is more profitable in near-infrared supercontinuum generation if the central wavelength of the input laser lies in the normal dispersion region of the gain fiber. A four-stage master oscillator power amplifier configuration is adopted and the output spectra under picosecond and nanosecond input pulses are compared with each other. The experimental results are in good accordance with the simulations which can provide some guidance for further optimization of the system.

Key words: fiber laser, supercontinuum, pulse width, fiber amplifier

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.65.Tg (Optical solitons; nonlinear guided waves)