Abstract
AbstractAn optical scheme for simultaneous detection of hydrogen sulfide (H2S) and carbon dioxide (CO2) is demonstrated. A near infrared tunable diode laser operating at 1.578 μm including the absorption lines of H2S at 6336.62 cm−1 and CO2 at 6336.24 cm−1 was used as the light source for spectroscopic measurements of H2S and CO2. A high‐finesse cavity with a base length of 21 cm and a pair of high reflectivity mirrors with a reflectivity of 99.999% were employed based on off‐axis integrated cavity output spectroscopy. Allan variance analysis shows that the minimum detection limits of 150 ppbv for H2S in 170 s averaging time and 1.03 ppmv for CO2 in 209 s, respectively.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
