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Infrared diode laser spectroscopy
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SYSNO ASEP 0347593 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Infrared diode laser spectroscopy Author(s) Civiš, Svatopluk (UFCH-W) RID, ORCID, SAI
Cihelka, Jaroslav (UFCH-W)
Matulková, Irena (UFCH-W)Source Title Opto-Electronics Review. - : Polska Akademia Nauk - ISSN 1230-3402
Roč. 18, č. 4 (2010), s. 408-420Number of pages 13 s. Language eng - English Country PL - Poland Keywords FTIR spectroscopy ; absorption spectroscopy ; laser diodes Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects IAA400400705 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000281982400010 DOI 10.2478/s11772-010-0040-9 Annotation Three types of lasers (double-heterostructure 66 K InAsSb/InAsSbP laser diode, room temperature, multi quantum wells with distributed feedback (MQW with DFB) (GaInAsSb/AlGaAsSb based) diode laser and vertical cavity surface emitting lasers (VCSELs) (GaSb based) have been characterized using Fourier transform emission spectroscopy and compared. The photoacoustic technique was employed to determine the detection limit of formaldehyde (less than 1 ppmV) for the strongest absorption line of the v3 + v5 band in the emission region of the GaInAsSb/AlGaAsSb diode laser. The detection limit (less than 10 ppbV) of formaldehyde was achieved in the 2820 cm−1 spectral range in case of InAsSb/InAsSbP laser (fundamental bands of v1, v5). Laser sensitive detection (laser absorption together with high resolution Fourier transform infrared technique including direct laser linewidth measurement, infrared photoacoustic detection of neutral molecules (methane, form-aldehyde) is discussed. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
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