Document Detail


Spectrum sensing of trace C<sub>2</sub>H<sub>2</sub> detection in differential optical absorption spectroscopy technique.
MedLine Citation:
PMID:  25321664     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
An improved algorithm for trace C<sub>2</sub>H<sub>2</sub> detection is presented in this paper. The trace concentration is accurately calculated by focusing on the absorption spectrum from the frequency domain perspective. The advantage of the absorption spectroscopy frequency domain algorithm is its anti-interference capability. First, the influence of the background noise on the minimum detectable concentration is greatly reduced. Second, the time-consuming preprocess of spectra calibration in the differential optical absorption spectroscopy technique is skipped. Experimental results showed the detection limit of 50 ppm is achieved at a lightpath length of 0.2 m. This algorithm can be used in real-time spectrum analysis with high accuracy.
Authors:
Xi Chen; Xiaopeng Dong
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  53     ISSN:  1539-4522     ISO Abbreviation:  Appl Opt     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-10-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5860-4     Citation Subset:  IM    
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