T-shape microresonator-based quartz-enhanced photoacoustic spectroscopy for ambient methane monitoring using 3.38-μm antimonide-distributed feedback laser diode

Yi, Hongming; Chen, Weidong; Vicet, A.; Cao, Zhensong; Gao, Xiaoming; Nguyen-Ba, Tong; Jahjah, Mohammad; Rouillard, Y.; Nähle, Lars; Fischer, M.

doi:10.1007/s00340-013-5713-x

Cited by 19 publications

(15 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser absorption spectroscopy based techniques offer the unique advantages for fast, self-calibration, highly selective and highly sensitive in situ quantification of CH 4 without any sample preparation [8][9][10][11][12][13][14]. Based on the Beer-Lambert absorption law, the detection sensitivity by absorption spectroscopy is proportional to the molecule absorption path length and the molecule absorption line intensity.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive detection of methane by near-infrared laser absorption spectroscopy using a compact dense-pattern multipass cell

Liu

Wang

Tan

et al. 2015

Sensors and Actuators B: Chemical

Self Cite

166

View full text Add to dashboard Cite

a b s t r a c tHighly sensitive detection of atmospheric methane (CH 4 ) was performed by long optical pathlength absorption spectroscopy based on a novel compact dense-pattern multipass cell (DP-MPC) in conjunction with a fiber-coupled distributed feedback diode laser operating at 1.653 m. Wavelength modulation spectroscopy approach was used and a minimum detectable concentration (1 ) of 100 ppb was obtained with a lock-in time constant of 1 ms. A measurement precision of <79 ppb was achieved by average of five laser scans in 1 s. This newly developed DP-MPC realized 215 times multiple reflections between two very cheap and robust silver coated concave spherical mirrors separated by a distance of 12 cm (forming an absorption cell of 280 cm 3 volume), offering an effective optical path length of 26.4 m, which is very suitable for applications to trace gas sensing in harsh environment, and weight-limited unmanned aerial vehicle (UAV) -or balloon-embedded field observations.

show abstract

Section: Introductionmentioning

confidence: 99%

Highly sensitive detection of methane by near-infrared laser absorption spectroscopy using a compact dense-pattern multipass cell

Liu

Wang

Tan

et al. 2015

Sensors and Actuators B: Chemical

Self Cite

166

View full text Add to dashboard Cite

show abstract

“…For highly sensitive and selective trace-gas sensing it is desirable to have high energy sources with large wavelength tunability in the mid-infrared (MIR) region, where most molecules have strong vibrational transitions (fingerprint region) [24]. A number of different light sources (QCLs, LEDs, DFBs, OPOs and more) have been reported used in QEPAS experiments [9,12,13,17,20]. OPOs seem to be the optimal choice for providing large wavelength tunability, high energy, molecular selectivity and cost-effective device for the generation of infrared light in the 1.5 to 5 µm spectral range [25].…”

Section: Methodsmentioning

confidence: 99%

“…Typically QEPAS-based systems consist of a QTF coupled to a micro-resonator (mR) in order to enhance the PAS signal. The mR is formed by one or two thin tubes, and the QTF is positioned between or beside the mR tubes to probe the acoustic signal excited in the gas [14,[16][17][18][19][20]. This kind of positioning is called on-axis and off-axis coupled, respectively.…”

Section: Introductionmentioning

confidence: 99%

Off-axis quartz-enhanced photoacoustic spectroscopy using a pulsed nanosecond mid-infrared optical parametric oscillator

Lassen

Lamard²,

Feng³

et al. 2016

Opt. Lett.

View full text Add to dashboard Cite

A trace-gas sensor, based on quartz-enhanced photoacoustic spectroscopy (QEPAS), consisting of two acoustically coupled micro-resonators (mR) with an off-axis 20 kHz quartz tuning fork (QTF) is demonstrated. The complete acoustically coupled mR system is optimized based on finite-element simulations and is experimentally verified. The QEPAS sensor is pumped resonantly by a nanosecond pulsed single-mode mid-infrared optical parametric oscillator. The sensor is used for spectroscopic measurements on methane in the 3.1-3.5 μm wavelength region with a resolution bandwidth of 1 cm^-1 and a detection limit of 0.8 ppm. An Allan deviation analysis shows that the detection limit at the optimum integration time for the QEPAS sensor is 32 ppbv at 190 s, and that the background noise is due solely to the thermal noise of the QTF.

show abstract

“…6 A number of different light sources (QCLs, LEDs, DFBs, OPOs and more) have been reported used in QEPAS experiments. [15][16][17][18][19][20] OPOs seem to be the optimal choice for providing large wavelength tunability, high energy, molecular selectivity and cost-effective device for the generation of infrared light in the 1.5 to 5 µm spectral range. 21 Therefore, a pulsed single mode mid-infrared (MIR) OPO has been developed.…”

Section: Methodsmentioning

confidence: 99%

“…11 Standard low cost QTFs with resonance frequencies at 32.7 kHz are typically used as sensors, however, also custom made QTFs have been reported. [12][13][14][15][16][17][18] The PA signal is proportional to the Q-factor: S ∝ QP α/f 0 , where P is the optical power, α is the molecular absorption coefficient and f 0 is the resonant frequency of the QTF. The stiffness of quartz provides an efficient means of confining the acoustic energy in the prongs of the QTF, resulting in large quality factors (Q-factors) of the order 100000 in vacuum and 3-8000 at atmospherical pressures.…”

Section: Introductionmentioning

confidence: 99%

Quartz-enhanced photo-acoustic spectroscopy for breath analyses

Petersen¹,

Lamard²,

Feng³

et al. 2017

SPIE Proceedings

View full text Add to dashboard Cite

An innovative and novel quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for highly sensitive and selective breath gas analysis is introduced. The QEPAS sensor consists of two acoustically coupled microresonators (mR) with an off-axis 20 kHz quartz tuning fork (QTF). The complete acoustically coupled mR system is optimized based on finite element simulations and experimentally verified. Due to the very low fabrication costs the QEPAS sensor presents a clear breakthrough in the field of photoacoustic spectroscopy by introducing novel disposable gas chambers in order to avoid cleaning after each test. The QEPAS sensor is pumped resonantly by a nanosecond pulsed single-mode mid-infrared optical parametric oscillator (MIR OPO). Spectroscopic measurements of methane and methanol in the 3.1 µm to 3.7 µm wavelength region is conducted. Demonstrating a resolution bandwidth of 1 cm −1 . An Allan deviation analysis shows that the detection limit at optimum integration time for the QEPAS sensor is 32 ppbv@190s for methane and that the background noise is solely due to the thermal noise of the QTF. Spectra of both individual molecules as well as mixtures of molecules were measured and analyzed. The molecules are representative of exhaled breath gasses that are bio-markers for medical diagnostics.

show abstract

T-shape microresonator-based quartz-enhanced photoacoustic spectroscopy for ambient methane monitoring using 3.38-μm antimonide-distributed feedback laser diode

Cited by 19 publications

References 14 publications

Highly sensitive detection of methane by near-infrared laser absorption spectroscopy using a compact dense-pattern multipass cell

Highly sensitive detection of methane by near-infrared laser absorption spectroscopy using a compact dense-pattern multipass cell

Off-axis quartz-enhanced photoacoustic spectroscopy using a pulsed nanosecond mid-infrared optical parametric oscillator

Quartz-enhanced photo-acoustic spectroscopy for breath analyses

Contact Info

Product

Resources

About