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Related Experiment Video

Updated: Jun 17, 2026

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

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Compensation for Atmospheric Phase Effects at 10.6 micro.

W T Cathey, C L Hayes, W C Davis

|January 16, 2010

Summary

This study introduces a holographic method to correct atmospheric distortions for 10.6-micrometer laser beams. Adaptive phase-distortion compensation significantly boosts delivered power and return signals, improving signal-to-noise ratio.

Area of Science:

Optics and Photonics
Atmospheric Optics
Laser Technology

Background:

Atmospheric turbulence distorts laser beams, reducing power delivery and signal quality.
Adaptive optics are crucial for mitigating phase distortions in free-space laser communication.

Purpose of the Study:

To present a holographic technique for compensating atmospheric phase distortion.
To demonstrate the feasibility and effectiveness of adaptive phase-distortion compensation for laser beams.

Main Methods:

A holographic approach was employed to correct phase distortions.
Experimental setup described for feasibility demonstration.
Tests conducted using a reflecting target at 150 m and 4600 m.

Main Results:

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Adaptive phase-distortion compensation significantly increased power delivered to the target and return signal.
Signal-to-noise ratio improved by a factor of N(2) with N apertures, compensating for random phase relations.
Demonstrated feasibility of using large arrays despite atmospheric distortions.

Conclusions:

Holographic adaptive phase-distortion compensation is effective for 10.6-micrometer laser beams.
The technique enhances laser power delivery and signal quality in atmospheric conditions.
Enables the use of large optical arrays in challenging atmospheric environments.