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Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

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...
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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

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Phase Contrast and Differential Interference Contrast Microscopy

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Related Experiment Video

Updated: Jun 17, 2026

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
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Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Published on: April 28, 2022

A streak spectrograph with microsecond resolution.

D E Buttrey1

  • 1Lockheed Research Laboratory, 3251Hanover Street, Palo Alto, California 94304, USA.

Applied Optics
|January 9, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed an inexpensive, time-resolved spectrograph for microsecond measurements. This tool aids in analyzing spectral time histories and measuring ion density in shock-heated gases.

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Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
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A Multimodal Wide-Field Fourier-Transform Raman Microscope
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A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Area of Science:

  • Physics
  • Spectroscopy
  • Physical Chemistry

Background:

  • Time-resolved spectroscopy is crucial for studying dynamic processes in gases.
  • Previous methods for microsecond spectral analysis were often complex or expensive.

Purpose of the Study:

  • To construct an economical and effective time-resolved spectrograph.
  • To achieve microsecond time resolution for spectral analysis.

Main Methods:

  • Combined a Gaertner glass-prism monochromator with a Beckman-Whitley drum camera.
  • Utilized a geometric aperture of f/10 and achieved 1 A wavelength resolution at 4300 A.
  • Covered a wavelength range of 3900 A to 9000 A.

Main Results:

  • Successfully constructed an inexpensive spectrograph with microsecond time resolution.
  • Demonstrated its utility in capturing spectral time histories of shocks in nitrogen and oxygen.
  • Applied the instrument to measure ion density in shock-heated gases via Stark-broadened lines.

Conclusions:

  • The developed spectrograph is a valuable tool for studying transient phenomena in gases.
  • It offers a cost-effective solution for high-time-resolution spectral analysis.
  • The instrument enables precise measurement of ion densities in dynamic gas samples.