In the deep ultra-violet (DUV) and the mid infra red (MIR) regions of the spectrum, the so-called hollow core waveguide (HCW) is an alternative for light-delivery systems. In addition to efficient light transportation, the HCW can be used as an intrinsic sensor: due to the long path-length through the HCW the spectral absorption of the gas under test can easily be monitored. Within this study an experimental system for gas analysis was developed and the results are compared to those from IR absorption measurements, also using the HCW approach.
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