Title :
Broadband QEPAS with IR-LEDs
Author :
Böttger, Stefan ; Willer, Ulrike ; Schade, Wolfgang
Author_Institution :
Fraunhofer Heinrich Hertz Inst., Goslar, Germany
Abstract :
An IR-LED at 3.4 μm and an off-beam QEPAS cell as detector are utilized for absorption spectroscopy. For 10 cm absorption path a detection limit of 382 ppm is achieved for methane.
Keywords :
light absorption; light emitting diodes; photoacoustic spectroscopy; visible spectroscopy; quartz-enhanced photoacoustic spectroscopy; wavelength 10 cm; wavelength 3.4 mum; Absorption; Atmospheric measurements; Broadband communication; Detectors; Light emitting diodes; Light sources; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
