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Related Experiment Video

Updated: Jul 8, 2026

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer

Published on: May 29, 2019

Optical path length fluctuations in the atmosphere.

G N Gibson¹, J Heyman, J Lugten

¹University of California, Physics Department, Berkeley, California 94720, USA.

|December 1, 1984

Summary

This summary is machine-generated.

Atmospheric fluctuations impact laser interferometer distance measurements. This study quantifies optical path length variations in open air, crucial for improving precision in dimensional monitoring.

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Area of Science:

Optics
Metrology
Atmospheric Physics

Background:

Laser interferometry is increasingly used for precise distance measurements.
Atmospheric conditions significantly affect optical path lengths, impacting measurement accuracy.

Purpose of the Study:

To evaluate the precision of dimensional monitoring using interferometry in open air.
To analyze optical path length fluctuations under good atmospheric conditions.

Main Methods:

Measurement and analysis of optical path length fluctuations over one-meter distances.
Investigation of temporal characteristics and spatial correlations of these fluctuations.

Main Results:

Quantification of the size and time scale of optical path length fluctuations.
Analysis of correlations between fluctuations in adjacent optical paths.

Conclusions:

Understanding atmospheric effects is vital for enhancing the precision of interferometric distance measurements.
The study provides data for developing compensation strategies against atmospheric disturbances.