Related Experiment Video
Updated: Jun 9, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
Ultrasensitive spectral trace detection of individual molecular components in an atmospheric binary mixture
Abstract:
We present what is, to our knowledge, the first demonstration of the application of the laser homodyne interferometric technique to the quantitative identification of individual trace molecular constituents of a binary mixture in an ambient atmospheric background. Operation of the laser interferometric detection system to within a factor of 26 of the theoretical quantum noise limit, without extensive vibrationisolation, is observed. We realize the spectral identification of SF(6) and CF(2)Cl(2) mixed in various trace concentrations, without significant cross interference, using molecular spectral features overlapping the 10P CO(2) laser transitions.
More Related Videos
08:23Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry
Published on: March 9, 2018
07:57Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
Related Concept Videos
High-Resolution Mass Spectrometry (HRMS)
Mass Spectrometry: Complex Analysis
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
High-Performance Liquid Chromatography: Types of Detectors
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
Mass Spectrum: Interpretation
UV–Vis Spectrometers