کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8919083 1642870 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Frequency-multiplexed gas sensing using chirped laser molecular spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Frequency-multiplexed gas sensing using chirped laser molecular spectroscopy
چکیده انگلیسی
A method for frequency-multiplexed multi-sample gas sensing is presented. It enables measuring multiple samples placed simultaneously in the setup, without any optical or mechanical switching. Samples are measured using heterodyne detection and signal from each sensing path is encoded at different carrier frequency. Subsequently, a signal from particular sample is retrieved through heterodyne beatnote demodulation at unique frequency. This technique is particularly suitable for real-time calibration of the sensor through a sequential (or simultaneous) detection of three signals: from unknown sample, reference sample and baseline. Basic setup is demonstrated and proof-of-concept experiments are presented. Very good agreement with spectra measured using standard tunable diode absorption spectroscopy is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Opto-Electronics Review - Volume 26, Issue 2, May 2018, Pages 103-107
نویسندگان
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