4.7 Article

Wavelength modulated diode probe laser for an interferometric cavity-assisted photothermal spectroscopy gas sensor

Related references

Note: Only part of the references are listed.
Article Optics

Balanced-detection interferometric cavity-assisted photothermal spectroscopy employing an all-fiber-coupled probe laser configuration

Johannes P. Waclawek et al.

Summary: The ICAPS method uses an optical cavity as a transducer for sensitive and compact gas detection, with the layout greatly improving the robustness of the sensor system and enabling operation close to the fundamental shot noise limit through balanced detection.

OPTICS EXPRESS (2021)

Article Chemistry, Analytical

Antiresonant hollow core fiber-assisted photothermal spectroscopy of nitric oxide at 5.26 μm with parts-per-billion sensitivity

Karol Krzempek et al.

Summary: Laser-based gas sensors are rapidly developing for various applications such as monitoring of greenhouse gases, safety in harsh environments, and medical purposes. Among these sensors, gas detectors utilizing photoacoustic or photothermal effects are known for their high selectivity and excellent signal-to-noise ratio. This study presents a novel, compact, and sensitive nitric oxide (NO) sensor targeting its strong transition near 5.26 μm by combining photothermal interferometry (PTI) technique and a gas absorption cell based on a self-fabricated antiresonant hollow-core fiber (ARHCF), achieving a minimum detection limit of 11 ppbv.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

Article Acoustics

Parts-per-billion detection of carbon monoxide: A comparison between quartz-enhanced photoacoustic and photothermal spectroscopy

Davide Pinto et al.

Summary: This study compared two optical detection techniques based on QEPAS and PTS, which directly detect acoustic waves and probe refractive index variations to detect optical absorption phenomena in gases. Compact QEPAS and PTS detection modules were integrated into a gas sensor system for CO detection, achieving ultimate detection limits of -6 ppb and -15 ppb, respectively.

PHOTOACOUSTICS (2021)

Article Optics

Modelling Fabry-Perot etalons illuminated by focussed beams

Dylan M. Marques et al.

OPTICS EXPRESS (2020)

Article Optics

Balanced-detection interferometric cavity-assisted photothermal spectroscopy

Johannes P. Waclawek et al.

OPTICS EXPRESS (2019)

Article Biochemical Research Methods

Implementation of a quantum cascade laser-based gas sensor prototype for sub-ppmv H2S measurements in a petrochemical process gas stream

Harald Moser et al.

ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2017)

Article Optics

The HITRAN2016 molecular spectroscopic database

I. E. Gordon et al.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER (2017)

Article Optics

2f-wavelength modulation Fabry-Perot photothermal interferometry

Johannes P. Waclawek et al.

OPTICS EXPRESS (2016)

Review Chemistry, Analytical

Quartz-Enhanced Photoacoustic Spectroscopy: A Review

Pietro Patimisco et al.

SENSORS (2014)

Article Physics, Multidisciplinary

Molecular Gas Sensing Below Parts Per Trillion: Radiocarbon-Dioxide Optical Detection

I. Galli et al.

PHYSICAL REVIEW LETTERS (2011)

Article Biochemical Research Methods

Exhaled nitric oxide parameters and functional capacity in chronic obstructive pulmonary disease

Matthew R. McCurdy et al.

JOURNAL OF BREATH RESEARCH (2011)

Article Optics

Application of quantum cascade lasers to trace gas analysis

A. Kosterev et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2008)

Article Spectroscopy

Ultra sensitive trace gas detection for biomedical applications

M Mürtz et al.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2006)

Review Toxicology

The toxicology of inhaled nitric oxide

B Weinberger et al.

TOXICOLOGICAL SCIENCES (2001)