Number of the records: 1
Infrared diode laser spectroscopy
- 1.0347593 - ÚFCH JH 2011 RIV PL eng J - Journal Article
Civiš, Svatopluk - Cihelka, Jaroslav - Matulková, Irena
Infrared diode laser spectroscopy.
Opto-Electronics Review. Roč. 18, č. 4 (2010), s. 408-420. ISSN 1230-3402. E-ISSN 1896-3757
R&D Projects: GA AV ČR IAA400400705
Institutional research plan: CEZ:AV0Z40400503
Keywords : FTIR spectroscopy * absorption spectroscopy * laser diodes
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.027, year: 2010
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.
Permanent Link: http://hdl.handle.net/11104/0188343
Number of the records: 1