Advances in fiber‐based quartz enhanced photoacoustic spectroscopy for trace gas sensing
Sign Up to like & getrecommendations! Published in 2021 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32841
Abstract: Fiber‐based quartz enhanced photoacoustic spectroscopy (QEPAS) is a method for trace gas sensing with excellent properties such as high sensitivity and strong applicability. It has received extensive attention and become particularly attractive in recent years.… read more here.
Keywords: photoacoustic spectroscopy; fiber based; spectroscopy; enhanced photoacoustic ... See more keywords
Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv – Level sensitivity using a T-shaped custom tuning fork
Sign Up to like & getrecommendations! Published in 2022 at "Photoacoustics"
DOI: 10.1016/j.pacs.2022.100330
Abstract: Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N2O and H2O detection, operating at a wavelength of 4.59 µm. A quartz… read more here.
Keywords: enhanced photoacoustic; quartz enhanced; spectroscopy; tuning fork ... See more keywords
Partial Least-Squares Regression as a Tool to Retrieve Gas Concentrations in Mixtures Detected Using Quartz-Enhanced Photoacoustic Spectroscopy
Sign Up to like & getrecommendations! Published in 2020 at "Analytical Chemistry"
DOI: 10.1021/acs.analchem.0c00075
Abstract: We report on a statistical tool based on partial least-squares regression (PLSR) able to retrieve single-component concentrations in a multiple-gas mixture characterized by spectrally overlapping absorption features. Absorption spectra of mixtures of CO–N2O and mixtures… read more here.
Keywords: least squares; partial least; gas; quartz enhanced ... See more keywords
Ppb-Level Quartz-Enhanced Photoacoustic Detection of Carbon Monoxide Exploiting a Surface Grooved Tuning Fork.
Sign Up to like & getrecommendations! Published in 2019 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.9b00182
Abstract: A compact and sensitive carbon monoxide (CO) sensor was demonstrated by using quartz enhanced photoacoustic spectroscopy (QEPAS) exploiting a novel 15.2 kHz quartz tuning fork (QTF) with grooved surfaces. The custom QTF was designed to… read more here.
Keywords: detection; enhanced photoacoustic; quartz enhanced; tuning fork ... See more keywords
Double antinode excited quartz-enhanced photoacoustic spectrophone
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4973858
Abstract: A double antinode excited quartz-enhanced photoacoustic spectroscopy (DAE-QEPAS) spectrophone, employing a custom-made quartz tuning fork (QTF) and operating at the 1stt overtone resonance mode is reported. The signal phase variation along the QTF prong was… read more here.
Keywords: quartz enhanced; antinode excited; spectrophone; antinode ... See more keywords
Recent advances in quartz enhanced photoacoustic sensing
Sign Up to like & getrecommendations! Published in 2018 at "Applied physics reviews"
DOI: 10.1063/1.5013612
Abstract: This review aims to discuss the latest advancements in quartz-enhanced photoacoustic spectroscopy (QEPAS) based trace-gas sensing. Starting from the QEPAS basic physical principles, the most used QEPAS configurations will be described. This is followed by… read more here.
Keywords: enhanced photoacoustic; quartz enhanced; photoacoustic sensing; recent advances ... See more keywords
Trace Gas Detection System Based on All-Optical Quartz-Enhanced Photoacoustic Spectroscopy
Sign Up to like & getrecommendations! Published in 2019 at "Applied Spectroscopy"
DOI: 10.1177/0003702819866468
Abstract: An all-optical quartz-enhanced photoacoustic spectroscopy system (QEPAS) with quadrature point stabilization for trace gas detection was reported. The extrinsic interferometry-based optical fiber Fabry–Perot sensor with quadrature point self-stabilization for detection of quartz prong vibration was… read more here.
Keywords: detection; system; quartz enhanced; optical quartz ... See more keywords
Tuning forks with optimized geometries for quartz-enhanced photoacoustic spectroscopy.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.001401
Abstract: We report on the design, realization, and performance of novel quartz tuning forks (QTFs) optimized for quartz-enhanced photoacoustic spectroscopy (QEPAS). Starting from a QTF geometry designed to provide a fundamental flexural in-plane vibrational mode resonance… read more here.
Keywords: quartz enhanced; photoacoustic spectroscopy; enhanced photoacoustic; forks optimized ... See more keywords
Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.418256
Abstract: A trace gas detection technique of quartz-enhanced photoacoustic-photothermal spectroscopy (QEPA-PTS) is demonstrated. Different from quartz-enhanced photoacoustic spectroscopy (QEPAS) or quartz-enhanced photothermal spectroscopy (QEPTS), which detected only one single kind of signal, QEPA-PTS was realized by… read more here.
Keywords: gas; quartz enhanced; enhanced photoacoustic; photoacoustic photothermal ... See more keywords
Off-axis quartz-enhanced photoacoustic spectroscopy using a pulsed nanosecond mid-infrared optical parametric oscillator: publisher's note.
Sign Up to like & getrecommendations! Published in 2018 at "Optics letters"
DOI: 10.1364/ol.43.005667
Abstract: This publisher's note corrects an affiliation error in Opt. Lett.41, 4118 (2016)OPLEDP0146-959210.1364/OL.41.004118. read more here.
Keywords: publisher note; axis quartz; quartz enhanced; spectroscopy ... See more keywords
H-shaped acoustic micro-resonator-based quartz-enhanced photoacoustic spectroscopy.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.449822
Abstract: An H-shaped acoustic micro-resonator (AmR)-based quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor is demonstrated for the first time. The H-shaped AmR has the advantages of easy optical alignment, high utilization of laser energy, and reduction in optical… read more here.
Keywords: shaped acoustic; spectroscopy; micro resonator; based quartz ... See more keywords