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

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
Flame Photometry: Lab01:16

Flame Photometry: Lab

1.2K
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
1.2K
Flame Photometry: Overview01:02

Flame Photometry: Overview

1.9K
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
1.9K
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

2.6K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
2.6K

You might also read

Related Articles

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

Sort by
Same author

Resolved rotation-vibration non-equilibrium with rotational VIPA-CARS.

Optics letters·2022
Same author

Gas detection sensitivity of hybrid fs/ps and fs/ns CARS.

Optics letters·2022
Same author

Phase matching in two-dimensional coherent Raman imaging.

Optics express·2020
Same author

A small porous-plug burner for studies of combustion chemistry and soot formation.

The Review of scientific instruments·2018
Same author

Childhood obesity treatment: telephone coaching is as good as usual care in maintaining weight loss - a randomized controlled trial.

Clinical obesity·2017
Same author

Design and characterization of a linear Hencken-type burner.

The Review of scientific instruments·2016
Same journal

Revisiting, Understanding, and Tailoring the Evolution in the Nature of Phase Transitions in Rare-Earth RE<sub>2</sub>In Alloys.

The journal of physical chemistry letters·2026
Same journal

Room-Temperature Quasi-CW Random Lasing in a Tin-Perovskite Ultrathin Film.

The journal of physical chemistry letters·2026
Same journal

Emerging Electride Behavior and Metallization in Molecular Hydrogen under High Pressure.

The journal of physical chemistry letters·2026
Same journal

Surface Electrochemistry of Au(111) in Acetonitrile Based Electrolytes: Formation of a Solvent Related Adsorbed Layer.

The journal of physical chemistry letters·2026
Same journal

Asymmetric Hydration Shell Reveals Interfacial TFSI Organization in Imidazolium Ionic Liquid Films.

The journal of physical chemistry letters·2026
Same journal

Turning 3D Molecular Crystals into 2D Moiré Superlattices with Properties Born Out of Bonding at the Angularly Stacked Interfaces.

The journal of physical chemistry letters·2026
See all related articles

Related Experiment Video

Updated: Apr 5, 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

Diagnostic Imaging in Flames with Instantaneous Planar Coherent Raman Spectroscopy.

A Bohlin1, C J Kliewer1

  • 1Sandia National Laboratories, Livermore, California 94551, United States.

The Journal of Physical Chemistry Letters
|August 15, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces two-dimensional Coherent Anti-Stokes Raman Spectroscopy (CARS) imaging for mapping temperature and species in reacting flows. It provides the first planar field diagnostics in a single laser pulse for combustion analysis.

Keywords:
2D-CARScombustion diagnosticshybrid femtosecond/picosecond CARShyperspectral imagingtime-resolved spectroscopyultrafast nonlinear optical spectroscopy

More Related Videos

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS
12:56

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS

Published on: October 17, 2010

14.1K
Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
10:04

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

13.4K

Related Experiment Videos

Last Updated: Apr 5, 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
Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS
12:56

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS

Published on: October 17, 2010

14.1K
Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
10:04

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

13.4K

Area of Science:

  • Combustion science
  • Spectroscopy
  • Fluid dynamics

Background:

  • Accurate spatial mapping of temperature and species concentrations is crucial for understanding gaseous chemically reacting flows.
  • Coherent Anti-Stokes Raman Spectroscopy (CARS) is a precise technique but traditionally limited to point-wise measurements.
  • Previous efforts focused on one-dimensional CARS imaging, leaving a gap in planar field diagnostics.

Purpose of the Study:

  • To develop and demonstrate two-dimensional CARS imaging for simultaneous spatial mapping of temperature and molecular species.
  • To overcome the point-wise limitation of traditional CARS for reacting flow diagnostics.
  • To provide the first planar field measurements in a single laser pulse for a combusting flow.

Main Methods:

  • Development of a novel two-dimensional CARS technique.
  • Application of the technique to a planar field within a combusting flow.
  • Utilizing a single laser pulse for rapid data acquisition.

Main Results:

  • Successful implementation of two-dimensional CARS imaging in a combusting flow.
  • Generation of detailed temperature maps (isotherms) from 450 K to 2000 K.
  • Simultaneous chemical mapping of oxygen (O2) and nitrogen (N2) concentrations.

Conclusions:

  • The developed 2D CARS technique enables comprehensive planar field diagnostics in reacting flows.
  • This advancement provides unprecedented spatial and chemical information for combustion studies.
  • The method offers a significant improvement over point-wise measurements for characterizing complex flow phenomena.