Abstract
We report the results of a systematic characterization of various optical fiber pumping schemes for difference-frequency sources employing periodically poled LiNbO3. Theoretical and practical considerations to achieve performance improvements for ultra-sensitive trace gas detection applications are discussed. As a result, we report a new mechanically robust and miniaturized mixing module employing a hybrid fiber with a plano-convex lens, reducing the size of previous DFG configurations by 65%. We also show pump, signal, and idler beam cross-sections before and after passing through a 100-m effective pathlength astigmatic Herriott multi-pass cell.
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PACS
42.55Wd; 42.60By; 42.60Jf; 42.62.Fi; 42.79.Nv
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Richter, D., Weibring, P. Ultra-high precision mid-IR spectrometer I: Design and analysis of an optical fiber pumped difference-frequency generation source. Appl. Phys. B 82, 479–486 (2006). https://doi.org/10.1007/s00340-005-2072-2
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DOI: https://doi.org/10.1007/s00340-005-2072-2