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Related Experiment Video

Updated: Jun 27, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Broadband, high-resolution spatial heterodyne spectrometer.

James E Lawler¹, Zac E Labby, John M Harlander

¹Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706, USA. jelawler@wisc.edu

|November 28, 2008

Summary

A new spatial heterodyne spectrometer (SHS) offers broadband, high-resolution measurements. The Mark 1 SHS provides over five times continuous wavenumber coverage and resolving power in the hundreds of thousands.

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Area of Science:

Optics and Spectroscopy
Instrument Design
Physical Chemistry

Background:

Spatial heterodyne spectroscopy (SHS) is an interferometric technique.
Broadband and high-resolution measurements are crucial for spectral analysis.
Existing instruments may have limitations in coverage or resolution.

Purpose of the Study:

To report the design and performance of a novel broadband, high-resolution spatial heterodyne spectrometer.
To demonstrate the capabilities of the Mark 1 SHS instrument.
To evaluate the instrument's wavenumber coverage and resolving power.

Main Methods:

Detailed design parameters of the Mark 1 spatial heterodyne spectrometer.
Experimental setup for performance evaluation.
Wavenumber coverage and resolving power measurements.

Main Results:

The Mark 1 SHS achieves broadband operation.
Continuous wavenumber coverage exceeding a factor of 5 was achieved.
A design resolving power in the hundreds of thousands was demonstrated.

Conclusions:

The developed spatial heterodyne spectrometer meets the requirements for broadband, high-resolution spectral measurements.
The Mark 1 SHS represents a significant advancement in spectroscopic instrumentation.
The instrument is suitable for applications requiring extensive spectral coverage and high resolution.