Measurement of Atmospheric Carbon dioxide using Hollow-core Absorption and Photoacoustic Spectroscopy with a Broadband Laser Source

Journal
Optical Sensors: Proceedings Optica Sensing Congress 2023, AIS, FTS, HISE, Sensors, ES 2023
Date Issued
2023-01-01
Author(s)
Kumar, Saran K.
Sooraj, S.
Selvaraj, Ramya
Abstract
Hollow-core fiber and photoacoustic spectroscopy techniques are demonstrated for the measurement of atmospheric CO2 using a broadband supercontinuum laser at 2 µm wavelength range. The CO2 concentration was measured during the day and night time, was found to be around 420 ppm and 450 ppm respectively.