Multi-pass cell-assisted photoacoustic/photothermal spectroscopy of gases using quantum cascade laser excitation and heterodyne interferometric signal detection
Applied Physics B, 2018•Springer
A heterodyne interferometer-based signal retrieval in photoacoustic/photothermal gas
spectrometer using mid-infrared quantum cascade laser excitation is demonstrated. This
new method for all-optical photoacoustic/photothermal signal detection allows for sensitivity
enhancement using standard multi-pass cells, commonly used in absorption-based
spectrometers. Two types of multi-pass cell are examined: a Herriott type with up to 33
passes and a White type with up to 46 passes. Good agreement between experimental …
spectrometer using mid-infrared quantum cascade laser excitation is demonstrated. This
new method for all-optical photoacoustic/photothermal signal detection allows for sensitivity
enhancement using standard multi-pass cells, commonly used in absorption-based
spectrometers. Two types of multi-pass cell are examined: a Herriott type with up to 33
passes and a White type with up to 46 passes. Good agreement between experimental …
Abstract
A heterodyne interferometer-based signal retrieval in photoacoustic/photothermal gas spectrometer using mid-infrared quantum cascade laser excitation is demonstrated. This new method for all-optical photoacoustic/photothermal signal detection allows for sensitivity enhancement using standard multi-pass cells, commonly used in absorption-based spectrometers. Two types of multi-pass cell are examined: a Herriott type with up to 33 passes and a White type with up to 46 passes. Good agreement between experimental results and numerical analysis is obtained.
Springer
以上显示的是最相近的搜索结果。 查看全部搜索结果