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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 17 — Aug. 26, 2013
  • pp: 20023–20031

DFG-based mid-IR generation using a compact dual-wavelength all-fiber amplifier for laser spectroscopy applications

Karol Krzempek, Grzegorz Sobon, and Krzysztof M. Abramski  »View Author Affiliations

Optics Express, Vol. 21, Issue 17, pp. 20023-20031 (2013)

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We demonstrate a compact mid-infrared (mid-IR) radiation source based on difference frequency generation (DFG) in periodically poled lithium niobate (PPLN) crystal. The system incorporates a dual-wavelength master oscillator power amplifier (MOPA) source capable of simultaneous amplification of 1064 nm and 1548 nm signals in a common active fiber co-doped with erbium and ytterbium ions. Two low-power seed lasers were amplified by a factor of 14.4 dB and 23.7 dB for 1064 nm and 1548 nm, respectively and used in a nonlinear DFG setup to generate 1.14 mW of radiation centered at 3.4 μm. The system allowed for open-path detection of methane (CH4) in ambient air with estimated minimum detectable concentration at a level of 26 ppbv.

© 2013 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(300.6340) Spectroscopy : Spectroscopy, infrared
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:

Original Manuscript: May 10, 2013
Revised Manuscript: July 12, 2013
Manuscript Accepted: July 21, 2013
Published: August 19, 2013

Karol Krzempek, Grzegorz Sobon, and Krzysztof M. Abramski, "DFG-based mid-IR generation using a compact dual-wavelength all-fiber amplifier for laser spectroscopy applications," Opt. Express 21, 20023-20031 (2013)

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