3 June 2005 Performance improvements of widely tunable lasers for multi gas species detection and analysis
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Abstract
Widely tunable lasers support certain characteristics which out perform DFB technology for the sensing of gas species in the NIR spectral region. Reduced frequency tuning variation and almost zero residual amplitude modulation (RAM) are investigated. The current report illustrates how 18 individual gas absorption lines can be interrogated using a single laser source over a 40nm wavelength range, where RAM and FM non-linearity never exceed 5% and 13 % respectively. Comparison with DFB technology is made.
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Neil Ryan, Neil Ryan, David McDonald, David McDonald, Adrian Lavin, Adrian Lavin, } "Performance improvements of widely tunable lasers for multi gas species detection and analysis", Proc. SPIE 5826, Opto-Ireland 2005: Optical Sensing and Spectroscopy, (3 June 2005); doi: 10.1117/12.605392; https://doi.org/10.1117/12.605392
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