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Updated: Jun 17, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Filter wedge spectrometer for field use.

W A Hovis¹, W A Kley, M G Strange

¹Goddard Space Flight Center, Greenbelt,Maryland 20771, USA.

|January 12, 2010

Summary

This summary is machine-generated.

Two novel spectrometers using interference filter wedges were developed for field spectral measurements. These instruments successfully operated at high altitudes, demonstrating their value in challenging environments.

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Area of Science:

Spectroscopy
Optical Engineering
Atmospheric Science

Background:

Field spectral measurements are crucial for environmental monitoring.
Existing spectrometers may face limitations in harsh conditions.
Interference filter wedges offer potential for robust spectral analysis.

Purpose of the Study:

To construct and test two spectrometers for field spectral measurements.
To evaluate the performance of interference filter wedges in airborne and balloon-borne applications.
To demonstrate the utility of these spectrometers in hostile environments.

Main Methods:

Construction of two spectrometers utilizing interference filter wedges.
One spectrometer operated in the 1.6 to 5.4 micrometer range.
The second spectrometer operated in the 7.4 to 14.6 micrometer range.
Flight testing of spectrometers in an unpressurized airplane to 12.2 km.
Balloon testing of a spectrometer to 33.3 km.

Main Results:

Both spectrometers performed well under field conditions.
Successful spectral measurements were achieved at high altitudes.
The interference filter wedge proved to be a valuable component.

Conclusions:

Interference filter wedges are effective for building robust spectrometers.
The developed spectrometers are suitable for spectral measurements in hostile environments.
This technology advances capabilities for atmospheric and remote sensing.