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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 17 — Jun. 10, 2012
  • pp: 3726–3730

Cavity-length optimization for high energy pulse generation in a long cavity passively mode-locked all-fiber ring laser

Nanxi Li, Jin Xue, Chunmei Ouyang, Kan Wu, Jia Haur Wong, Sheel Aditya, and Perry Ping Shum  »View Author Affiliations


Applied Optics, Vol. 51, Issue 17, pp. 3726-3730 (2012)
http://dx.doi.org/10.1364/AO.51.003726


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Abstract

In order to achieve higher pulse energy in a passively mode-locked fiber ring laser, a long cavity length is commonly implemented. However, a long cavity operating in the anomalous dispersion regime also leads to pulse broadening, which reduces the average pulse power. In this paper, the trade-off between cavity length and average pulse power is investigated with the aim of optimizing the cavity length to achieve maximum pulse energy. Numerical simulation results, presented here, indicate that there exists an optimum cavity length for which the pulse energy is maximum and the optimum length shifts as the pump power changes. The simulation results for a pump power of 500 mW are verified by measurements carried out on a long cavity nonlinear polarization rotation mode-locked all-fiber ring laser operating in the anomalous dispersion regime. With a repetition rate of 266 kHz for the dissipative solitons, we achieve a pulse energy of 139.1 nJ for a cavity length of 700 m. Higher pulse energy can be expected by using a pump laser diode with higher pump power.

© 2012 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3560) Lasers and laser optics : Lasers, ring
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 18, 2012
Revised Manuscript: April 25, 2012
Manuscript Accepted: April 29, 2012
Published: June 4, 2012

Citation
Nanxi Li, Jin Xue, Chunmei Ouyang, Kan Wu, Jia Haur Wong, Sheel Aditya, and Perry Ping Shum, "Cavity-length optimization for high energy pulse generation in a long cavity passively mode-locked all-fiber ring laser," Appl. Opt. 51, 3726-3730 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-17-3726

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