Intracavity absorption spectroscopy of HCl isotopes, H₂O, CH₄, C₂H₄, and C₂H₆ in the 3.1-3.4 µm spectral range using a Cr:CdSe laser
In: Optics Express (OpEx), Jg. 30 (2022), Heft 22, S. 40347 - 40356
2022Artikel/Aufsatz in ZeitschriftOA Gold
MaschinenbauFakultät für Ingenieurwissenschaften » Maschinenbau und Verfahrenstechnik » Institut für Energie- und Material-Prozesse (EMPI) » Reaktive Fluide
Damit verbunden: 1 Publikation(en)
Titel in Englisch:
Intracavity absorption spectroscopy of HCl isotopes, H₂O, CH₄, C₂H₄, and C₂H₆ in the 3.1-3.4 µm spectral range using a Cr:CdSe laser
Autor*in:
Fjodorow, PeterUDE
- LSF ID
- 57823
- ORCID
- 0000-0003-2329-4868
- Sonstiges
- der Hochschule zugeordnete*r Autor*in
korrespondierende*r Autor*in
- GND
- 1148037985
- LSF ID
- 48807
- ORCID
- 0000-0002-6879-4826
- Sonstiges
- der Hochschule zugeordnete*r Autor*in
Erscheinungsjahr:
2022
Open Access?:
OA Gold
DuEPublico 2 ID
Scopus ID
Notiz:
OA Förderung 2022
Sprache des Textes:
Englisch
Abstract in Englisch:
We demonstrate the first application of a Cr:CdSe laser for highly-sensitive multicomponent intracavity absorption spectroscopy around λ = 3.1-3.4 µm. A detection scheme based on an integrated recording of multiple (∼70) individual Cr:CdSe laser pulses after a single pump-pulse excitation is reported. The sensitivity of our system corresponds to an effective absorption path length of Lₑff ≈ 850 m. Exemplary measurements of atmospheric H₂O and CH₄, and additionally introduced gas-phase HCl, C₂H₄, or C₂H₆ are presented. The achieved noise-equivalent detection limits are in the ppb range. Possibilities for further sensitivity enhancement by up to a factor of 10⁴ are discussed.