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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 9, Iss. 4 — Apr. 10, 2011
  • pp: 041401–

Millijoule pulse energy picosecond fiber chirped-pulse amplification system

Zhi Yang, Xiaohong Hu, Yishan Wang, Wei Zhang, and Wei Zhao  »View Author Affiliations


Chinese Optics Letters, Vol. 9, Issue 4, pp. 041401- (2011)


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Abstract

The efficient generation of a 1.17-mJ laser pulse with 360 ps duration using an ytterbium (Yb)-doped fiber amplifier chain seeded by a homemade mode-locked fiber laser is demonstrated experimentally. A specially designed figure-of-eight fiber laser acts as the seed source of a chirped-pulse amplification (CPA) system and generates mode-locked pulses with hundreds of picosecond widths. Two kinds of large-mode-area (LMA) double-clad Yb-doped fibers are employed to construct the pre-amplifier and main amplifier. All of the adopted instruments help avoid severe nonlinearity in fibers to raise sub-nanosecond pulse energy with acceptable signal-to-noise ratio (SNR). The output spectrum of this fiber-based CPA system shows that amplified spontaneous emission (ASE) is suppressed to better than 30 dB, and the onset of stimulated Raman scattering is excluded.

© 2011 Chinese Optics Letters

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers

Citation
Zhi Yang, Xiaohong Hu, Yishan Wang, Wei Zhang, and Wei Zhao, "Millijoule pulse energy picosecond fiber chirped-pulse amplification system," Chin. Opt. Lett. 9, 041401- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-4-041401


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