Journal
APPLIED PHYSICS LETTERS
Volume 110, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4974483
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Funding
- National Natural Science Foundation of China [61505041]
- Natural Science Foundation of Heilongjiang Province of China [F2015011]
- China Postdoctoral Science Foundation [2014M560262, 2015T80350]
- Heilongjiang Province Postdoctoral Foundation [LBH-TZ0602]
- Heilongjiang Province [LBH-Z14074]
- Fundamental Research Funds for the Central Universities [HIT. NSRIF. 2015044]
- National Key Scientific Instrument and Equipment Development Projects of China [2012YQ040164]
- U. S. National Science Foundation ERC MIRTHE award
- Welch Foundation [C-0586]
- Application Technology Research and Development Projects of Harbin [2016RAQXJ140]
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An ultra-high sensitive acetylene (C2H2) Quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor based on a high power laser and a quartz tuning fork with a resonance frequency f(0) of 30.72 kHz was demonstrated. An erbium-doped fiber amplifier (EDFA) amplified distributed feedback diode laser with a center wavelength of 1.53 mu m was used as the exciting source. A 33.2 ppb minimum detection limit (MDL) at 6534.37 cm(-1) was achieved, and the calculated normalized noise equivalent absorption coefficient was 3.54 x 10(-8) cm(-1) W/root Hz when the laser output power was 1500 mW. The ppb-level detection sensitivity of C2H2 validated the reported QEPAS method. Published by AIP Publishing.
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