Compact supercontinuum sources based on tellurite suspended core fibers for absorption spectroscopy beyond 2 μm

We present the experimental development of two compact supercontinuum laser sources based on tellurite suspended core fibers with and without tapering post-processing. The pumping scheme makes use of commercially-available nJ-level femtosecond and picosecond fiber lasers at 1.56 and 2.06 μm respecti...

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Bibliographic Details
Published in:Laser physics letters 2016-07, Vol.13 (7), p.75402
Main Authors: Strutynski, Clément, Picot-Clémente, Jérémy, Désévédavy, Frédéric, Jules, Jean-Charles, Gadret, Grégory, Kibler, Bertrand, Smektala, Frédéric
Format: Article
Language:English
Subjects:
laser spectroscopy
microstructured fibers
Physics
supercontinuum generation
tapered fibers
tellurite glass
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Summary:We present the experimental development of two compact supercontinuum laser sources based on tellurite suspended core fibers with and without tapering post-processing. The pumping scheme makes use of commercially-available nJ-level femtosecond and picosecond fiber lasers at 1.56 and 2.06 μm respectively. The resulting spectral broadening that occurs in a few tens-of-centimeters of tellurite fiber allows coverage of the convenient molecular fingerprint region between 2 and 3 μm. It is then exploited in a proof-of-principle experiment for methane spectroscopy measurements in the mid-infrared by means of the supercontinuum absorption spectroscopy technique. Experimental results are in fairly good agreement with both numerical simulations of supercontinuum generation and spectroscopic predictions of the HITRAN database.
ISSN:1612-2011
1612-202X
DOI:10.1088/1612-2011/13/7/075402