2026-10-13T11:21:37Z https://www.scidb.cn/oai

10.57760/sciencedb.02673 2025-12-18T18:58:25Z

2025-12-18 The data of article "Atmospheric N2O gas detection based on an inter-band cascade laser around 3.939 μm" doi:10.57760/sciencedb.02673 en N2O is a significant atmospheric greenhouse gas that contributes to global warming and climate change. In this dataset, the high sensitivity detection of atmospheric N2O is achieved using wavelength modulation spectroscopy (WMS) with an inter-band cascade laser operating around 3.939 µm. A LabVIEW-based software signal generator and software lock-in amplifiers are designed to simplify the system. In order to eliminate the interference from water vapor, the detection was performed at a pressure of 0.1 atm (1 atm = 1.01325×105 Pa) and a drying tube was added to the system. To improve the system performance for long term detection, a novel frequency locking method and 2 f/1 f calibration-free method were employed to lock the laser frequency and calibrate the power fluctuations, respectively. Atmospheric N2O; wavelength modulation spectroscopy; inter-band cascade laser guishi wang PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset http://www.doi.org/10.1088/1674-1056/ab5ef6 Science Data Bank