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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7616–7624

Observations of four types of pulses in a fiber laser with large net-normal dispersion

Leiran Wang, Xueming Liu, Yongkang Gong, Dong Mao, and Lina Duan  »View Author Affiliations

Optics Express, Vol. 19, Issue 8, pp. 7616-7624 (2011)

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Four different types of pulses are experimentally obtained in one erbium-doped all-fiber laser with large net-normal dispersion. The proposed laser can deliver the rectangular-spectrum (RS), Gaussian-spectrum (GS), broadband-spectrum (BS), and noise-like pulses by appropriately adjusting the polarization states. These kinds of pulses have distinctly different characteristics. The RS pulses can easily be compressed to femtosecond level whereas the pulse energy is restricted by the trend of multi-pulse shaping with excessive pump. The GS and BS pulses always maintain the single-pulse operation with much higher pulse-energy and accumulate much more chirp. After launching the pulses into the photonic-crystal fiber, the supercontinuum can be generated with the bandwidth of >700 nm by the BS pulses and of ~400 nm by the GS pulses, whereas it can hardly be generated by the RS pulses. The physical mechanisms behind the continuum generation are qualitatively investigated relating to different operating regimes. This work could help to a deeper insight of the normal-dispersion pulses.

© 2011 OSA

OCIS Codes
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3500) Lasers and laser optics : Lasers, erbium
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 25, 2011
Revised Manuscript: March 27, 2011
Manuscript Accepted: March 28, 2011
Published: April 5, 2011

Leiran Wang, Xueming Liu, Yongkang Gong, Dong Mao, and Lina Duan, "Observations of four types of pulses in a fiber laser with large net-normal dispersion," Opt. Express 19, 7616-7624 (2011)

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