Journal
OPTICS COMMUNICATIONS
Volume 275, Issue 2, Pages 379-384Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2007.03.034
Keywords
acetylene; hydrogen cyanide; fiber ring laser; fiber Fabry-Perot tunable filter; absorption spectroscopy
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We fabricate a low noise erbium-doped fiber ring laser that can be continuously tuned over 102 nm by insertion of the fiber Fabry-Perot tunable filter (FFP-TF) in the ring cavity with a novel cavity structure and the optimal gain medium length. As an application of this fiber ring laser, we performed the absorption spectroscopy of acetylene ((C2H2)-C-13) and hydrogen cyanide ((HCN)-C-13-N-14) and measure the absorption spectra of more than 50 transition lines of these gases with an excellent signal to noise ratio (SNR). The pressure broadening coefficients of four acetylene transition lines are obtained using this fiber ring laser and an external cavity laser diode. (c) 2007 Elsevier B.V. All rights reserved.
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