| Autor: |
Fjodorow, Peter, Frolov, Mikhail P., Korostelin, Yuri V., Kozlovsky, Vladimir I., Schulz, Christof, Leonov, Stanislav O., Skasyrsky, Yan K. |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Popis: |
We demonstrate an intracavity absorption spectroscopy system based on a broadband single-crystal pulsed Fe:ZnSe laser. The laser operates at room-temperature and is continuously tunable in the spectral range of 3.76–5.29 µm. The long-wavelength emission up to 5.29 µm is a record achievement for Fe:ZnSe lasers, to the best of our knowledge. The developed laser system is applied for measurements of gaseous absorption inside the laser resonator. We demonstrate sensitive detection of (i) CO₂ isotopes in the atmosphere and in human breath, (ii) CO in breath (after cigarette smoking) and in the smoke of a smoldering paper, and (iii) N₂O in a gas flow. The achieved detection limits are: 0.1 ppm for ¹²CO₂ and ¹³CO₂, 3 ppm for CO, and 1 ppm for N₂O. The sensitivity of the current system is primarily limited by the short pump-pulse duration of 40 ns. Possibilities for sensitivity enhancement by up to a factor of 10⁷ are discussed. OA Förderung 2021 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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