We will report here on the design and realization of optoacoustic sensors based on an external cavity QCL laser source emitting at 10,54 μm, fiber-coupled with a QEPAS spectrophone module. SF6 has been selected as the target gas. Single mode laser delivery through the prongs of the quartz tuning fork has been realized using a hollow waveguide fiber with internal core size of 300 μm. The achieved sensitivity of the system was 50 part per trillion in 1 s corresponding to a record for QEPAS normalized noise-equivalent absorption of 2,7•10-10 W•cm-1•Hz-1/2. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Part-per-trillion level detection of SF6 using a single-mode fiber-coupled quantum cascade laser and a quartz enhanced photoacoustic sensor / Spagnolo, V.; Patimisco, P.; Borri, S.; Scamarcio, G.; Bernacki, B. E.; Kriesel, J.. - STAMPA. - 8631:(2013). (Intervento presentato al convegno Conference on Quantum Sensing and Nanophotonic Devices X tenutosi a San Francisco, CA nel February 2 -7, 2013) [10.1117/12.2001638].
Part-per-trillion level detection of SF6 using a single-mode fiber-coupled quantum cascade laser and a quartz enhanced photoacoustic sensor
Spagnolo V.;Patimisco P.;
2013-01-01
Abstract
We will report here on the design and realization of optoacoustic sensors based on an external cavity QCL laser source emitting at 10,54 μm, fiber-coupled with a QEPAS spectrophone module. SF6 has been selected as the target gas. Single mode laser delivery through the prongs of the quartz tuning fork has been realized using a hollow waveguide fiber with internal core size of 300 μm. The achieved sensitivity of the system was 50 part per trillion in 1 s corresponding to a record for QEPAS normalized noise-equivalent absorption of 2,7•10-10 W•cm-1•Hz-1/2. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
