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Optics Express

Optics Express

  • Editor: C. Martijin de Sterke
  • Vol. 19, Iss. 7 — Mar. 28, 2011
  • pp: 6433–6438

1.3 µm Raman-bismuth fiber amplifier pumped by semiconductor disk laser

A. Chamorovskiy, J. Rautiainen, A. Rantamäki, K. M. Golant, and O. G. Okhotnikov  »View Author Affiliations


Optics Express, Vol. 19, Issue 7, pp. 6433-6438 (2011)
http://dx.doi.org/10.1364/OE.19.006433


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Abstract

A hybrid Raman-bismuth fiber amplifier pumped in co-propagation configuration by a single 1.22 µm semiconductor disk laser is presented. The unique attribute of this dual-gain system is that both amplifiers require the pump source with the same wavelength because pump-Stokes spectral shift in 1.3 µm Raman amplifier and pump-gain bandwidth separation in 1.3 µm bismuth fiber amplifier have the same value. Residual pump power at the output of Raman amplifier in this scheme is efficiently consumed by bismuth-doped fiber thus increasing the overall conversion efficiency. The small-signal gain of 18 dB at 1.3 W of pump power has been achieved for hybrid scheme which is by 9 dB higher as compared with isolated Raman amplifier without bismuth fiber. Low noise performance of pump semiconductor disk laser with RIN of −150 dB/Hz combined with nearly diffraction-limited beam quality and Watt-level output powers allows for efficient core-pumping of a single-mode fiber amplifier systems and opens up new opportunities for amplification in O-band spectral range.

© 2011 OSA

OCIS Codes
(060.2290) Fiber optics and optical communications : Fiber materials
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.4480) Lasers and laser optics : Optical amplifiers
(290.5910) Scattering : Scattering, stimulated Raman
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 9, 2011
Revised Manuscript: March 10, 2011
Manuscript Accepted: March 11, 2011
Published: March 21, 2011

Citation
A. Chamorovskiy, J. Rautiainen, A. Rantamäki, K. M. Golant, and O. G. Okhotnikov, "1.3 µm Raman-bismuth fiber amplifier pumped by semiconductor disk laser," Opt. Express 19, 6433-6438 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-7-6433


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