Design of a New Ultra-sensitive Methane Sensor Based On Optical Approaches that Utilize Laser Diodes
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Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Old City Publishing
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We design a new ultra-sensitive optical methane sensor by combining such optical approaches as appropriate use of absorption bands of methane by HITRAN database in the near-infrared (NIR) region, effective absorption path length in circular multi-pass optical cell, a wavelength modulation, and noise suppression with dual beam configuration. The design offers a compact and portable optical sensor for methane gas measurements in real time and high sensitivity. In the design, one can select different laser diode source to expand the selectivity labels for the interest many other trace gases. This is inexpensive and simpler experimental design without complexity of laser frequency locking and phase stabilization. It can find wide applications in many fields such as physical, environmental, and atmospheric research as well as physics, analytical chemistry, biology, medical diagnosis and process technology. © 2021 Old City Publishing, Inc.
Açıklama
Anahtar Kelimeler
beam optic; CH4; circular multi-pass cell (CMPC); Laser diode; methane; optical path length; optics design; sensor
Kaynak
Lasers in Engineering
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
51
Sayı
1
