Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

3.4K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
3.4K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

974
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
974
Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

7.3K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
7.3K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.8K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.8K
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

5.4K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels.  Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
5.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Multi-Gb/s free-space laser communication at 4.6-μm wavelength using a high-speed, room-temperature, resonant-cavity infrared detector (RCID) and a quantum-cascade laser.

Optics express·2024
Same author

Detection of dimethyl methylphosphonate (DMMP) with an interband cascade laser sensor.

Optics express·2024
Same author

Perceptions and experiences of blood pressure self-monitoring during hypertensive pregnancy: A qualitative analysis of women's and clinicians' experiences in the OPTIMUM-BP trial.

Pregnancy hypertension·2022
Same author

Changes to management of hypertension in pregnancy, and attitudes to self-management: An online survey of obstetricians, before and following the first wave of the COVID-19 pandemic.

Pregnancy hypertension·2021
Same author

Multi-species sensing using multi-mode absorption spectroscopy with mid-infrared interband cascade lasers.

Applied physics. B, Lasers and optics·2020
Same author

Two-dimensional plasmonic grating for increased quantum efficiency in midwave infrared nBn detectors with thin absorbers.

Optics express·2018

Related Experiment Video

Updated: Apr 3, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

6.7K

Mid-infrared multi-mode absorption spectroscopy using interband cascade lasers for multi-species sensing.

J H Northern, S O'Hagan, B Fletcher

    Optics Letters
    |September 15, 2015
    PubMed
    Summary
    This summary is machine-generated.

    High-speed multimode absorption spectroscopy (MUMAS) using an interband cascade laser (ICL) achieved 10 kHz scan rates. This technique successfully detected trace gases like methane with high sensitivity and identified multiple gas species simultaneously.

    More Related Videos

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    12.8K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.7K

    Related Experiment Videos

    Last Updated: Apr 3, 2026

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    6.7K
    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    12.8K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.7K

    Area of Science:

    • Spectroscopy
    • Laser technology
    • Gas sensing

    Background:

    • High-speed spectroscopic techniques are crucial for real-time gas analysis.
    • Interband cascade lasers (ICLs) offer potential for mid-infrared applications.
    • Multimode absorption spectroscopy (MUMAS) requires efficient laser sources and detection methods.

    Purpose of the Study:

    • To demonstrate the capability of interband cascade laser (ICL) based multimode absorption spectroscopy (MUMAS) for high-speed gas detection.
    • To characterize the performance of MUMAS in terms of scan rates and detection limits.
    • To assess the simultaneous detection capabilities for multiple gas species.

    Main Methods:

    • Utilized an interband cascade laser (ICL) operating at 3.7 μm.
    • Employed multimode absorption spectroscopy (MUMAS) with scan rates up to 10 kHz.
    • Analyzed spectral signatures of hydrogen chloride (HCl) to determine mode linewidths and gas mixtures containing methane, acetylene, and formaldehyde.

    Main Results:

    • Achieved scan rates of 10 kHz for MUMAS.
    • Derived individual mode linewidths of 10-80 MHz from HCl spectra.
    • Established a detection level of 30 μbar·m for methane with a 1-second measurement at 100 Hz.
    • Demonstrated simultaneous detection of methane, acetylene, and formaldehyde in a mixed gas sample.

    Conclusions:

    • ICL-based MUMAS is a viable technique for high-speed, sensitive gas detection.
    • The method allows for the identification and quantification of multiple gases concurrently.
    • MUMAS offers a promising approach for various applications requiring rapid and precise gas analysis.