Tunable mid-infrared laser sources for trace-gas analysis

D. B. Kolker, I. V. Sherstov, A. A. Boyko, B. N. Nyushkov, E. Y. Erushin, N. Y. Kostyukova, A. I. Akhmathanov, A. Y. Kiryakova, A. V. Pavluck

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференциирецензирование

Аннотация

We demonstrate advanced experimental approaches to photoacoustic gas detection with tunable mid-infrared (mid-IR) laser sources of different types. A gas analyzer for registration of various gas components based on a tunable narrow-linewidth optical parametric oscillator (OPO) was designed and investigated. Using this OPO, the possibility of measuring the trace concentration (~2÷3 ppm) of methane (CH4) in air was experimentally shown. The gas detection capability was enhanced by introducing injection seeding into the OPO. Another gas analyzer was based on a quantum cascade laser (tunable within the range ~7.6 ÷7.7 μm) and a resonant differential photoacoustic detector. Detection of the ultra-low concentration (~0.3 ppm) of methane in air was achieved (the standard dispersion was (1σ) ≈ (10–11) ppb with an integration time of 10 s). We compare the presented approaches and outline their further development.

Язык оригиналаанглийский
Номер статьи012013
ЖурналJournal of Physics: Conference Series
Том2067
Номер выпуска1
DOI
СостояниеОпубликовано - 9 нояб. 2021
Событие9th International Symposium on Modern Problems of Laser Physics, MPLP 2021 - Novosibirsk, Российская Федерация
Продолжительность: 22 авг. 202128 авг. 2021

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

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