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Implementation of a Reference Interferometer for Nanodetection

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Interferometric Laser Scanner for Direction Determination.

Gennady Kaloshin¹, Igor Lukin²

¹V.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Square 1, Tomsk 634055, Russia. gkaloshin@iao.ru.

Sensors (Basel, Switzerland)

|January 26, 2016

Summary

This summary is machine-generated.

This study presents a new laser scanning method for direction determination using partially coherent beams in turbulent atmospheres. The technique ensures reliable operation up to 10 km, even with moderate atmospheric turbulence.

Keywords:

atmospheric turbulence interference laser beam laser scanning

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Area of Science:

Optics and Photonics
Atmospheric Physics
Laser Technology

Background:

Direction determination methods often struggle with atmospheric turbulence.
Existing methods for fully coherent beams are limited in turbulent environments.
Partially coherent sources present unique challenges for interference pattern analysis.

Purpose of the Study:

To extend laser scanning-based direction determination to partially coherent sources in turbulent atmospheres.
To identify conditions for stable interference pattern formation over extended atmospheric paths.
To develop a method for selecting laser scanner parameters for reliable operation in varying turbulence.

Main Methods:

Theoretical analysis of interference pattern formation by two partially coherent sources.
Investigation of pattern stability on propagation paths from 0.5-10 km.
Analysis of mean intensity of interference patterns to select scanner parameters.
Estimation of interference pattern visibility as a function of pathlength, turbulence, and source spacing.

Main Results:

Conditions for stable interference pattern formation in turbulent atmospheres were identified.
A method for laser scanner parameter selection was developed for robust atmospheric operation.
Interference pattern visibility was quantified concerning atmospheric turbulence and pathlength.
The laser scanner method demonstrated applicability up to 10 km in moderately strong turbulence.

Conclusions:

The extended laser scanning method is viable for direction determination with partially coherent sources in turbulent atmospheres.
Parameter selection based on mean intensity analysis ensures operability across diverse turbulence conditions.
The method's effectiveness is validated for ranges up to 10 km, enhancing remote sensing capabilities.