[HTML][HTML] Spectroscopic trace gas detection in air-based gas mixtures: Some methods and applications for breath analysis and environmental monitoring
J Xia, F Zhu, J Bounds, E Aluauee… - Journal of Applied …, 2022 - pubs.aip.org
Laser absorption spectroscopy as a powerful tool for detecting trace gases has been widely
used in the monitoring of atmospheric greenhouse gases, pollutions, and respiration …
used in the monitoring of atmospheric greenhouse gases, pollutions, and respiration …
On-chip Fourier-transform spectrometer based on spatial heterodyning tuned by thermo-optic effect
Miniaturized optical spectrometers providing broadband operation and fine resolution have
an immense potential for applications in remote sensing, non-invasive medical diagnostics …
an immense potential for applications in remote sensing, non-invasive medical diagnostics …
[HTML][HTML] Towards the highest sensitivity and selectivity of the Earth's and Space's laser-based methane sensors
J Wojtas - Measurement, 2024 - Elsevier
The paper describes the first demonstration of the detection of small amounts of methane
using the 8.014 µm absorption line and cavity ring-down spectroscopy (CRDS) employing …
using the 8.014 µm absorption line and cavity ring-down spectroscopy (CRDS) employing …
Ge-rich graded SiGe waveguides and interferometers from 5 to 11 µm wavelength range
The mid-infrared (mid-IR) wavelength range hosts unique vibrational and rotational
resonances of a broad variety of substances that can be used to unambiguously detect the …
resonances of a broad variety of substances that can be used to unambiguously detect the …
Optical modulation in Ge-rich SiGe waveguides in the mid-infrared wavelength range up to 11 µm
M Montesinos-Ballester, V Vakarin… - Communications …, 2020 - nature.com
Waveguide integrated optical modulators in the mid-infrared wavelength range are of
significant interest for molecular spectroscopy. This is because on-chip synchronous …
significant interest for molecular spectroscopy. This is because on-chip synchronous …
Stationary and drone-assisted methane plume localization with dispersion spectroscopy
This work presents stationary and mobile retroreflector-based remote sensing techniques for
methane leak localization and quantification using chirped laser dispersion spectroscopy …
methane leak localization and quantification using chirped laser dispersion spectroscopy …
Carbon gas flux to and from inland waters: support for a global observation network
TC Harmon - Limnology, 2020 - Springer
Research on carbon gas flux to and from inland waters has increased over the past two
decades, driven mainly by the need to understand (1) the global carbon budget in regard to …
decades, driven mainly by the need to understand (1) the global carbon budget in regard to …
High resolution and ultra-compact on-chip spectrometer using bidirectional edge-input arrayed waveguide grating
Two Edge-input arrayed waveguide gratings (AWGs) with star couplers of Confocal and
Rowland configurations, respectively, are experimentally investigated and the one with the …
Rowland configurations, respectively, are experimentally investigated and the one with the …
Probing greenhouse gases in turbulent atmosphere by long-range open-path wavelength modulation spectroscopy
Open-path measurements of greenhouse gases yield valuable data for atmospheric
research. We present such a method based on wavelength modulation spectroscopy to …
research. We present such a method based on wavelength modulation spectroscopy to …
An open-path tunable diode laser absorption spectrometer for detection of carbon dioxide at the Bonanza Creek Long-Term Ecological Research Site near Fairbanks …
We have developed a low-power, open-path, near-infrared (NIR) tunable diode laser sensor
for the measurement of near ground-level concentrations of greenhouse gases. Here, we …
for the measurement of near ground-level concentrations of greenhouse gases. Here, we …