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Effect of source temporal coherence on optical transfer function in weak turbulence.

C C Yang, M A Plonus

|October 2, 2010

Summary

The study calculated the spatial-frequency spectrum for imaging through weak turbulence. Source temporal coherence minimally impacts the performance of turbulence-lens imaging systems.

Area of Science:

Optics
Atmospheric Optics
Image Science

Background:

Turbulence in the atmosphere distorts images, affecting imaging system performance.
Understanding the impact of source properties on imaging through turbulence is crucial for applications like remote sensing and astronomy.

Purpose of the Study:

To calculate the average image spatial-frequency spectrum of an object.
To investigate the influence of source temporal coherence on imaging system performance under weak turbulence.

Main Methods:

Calculation of the spatial-frequency spectrum using the narrow-band approximation.
Analysis of imaging under temporally stationary, spatially incoherent source illumination and weak turbulence conditions.

Main Results:

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The average image spatial-frequency spectrum was determined.
Source temporal coherence was found to have minimal influence on the composite turbulence-lens imaging system's performance.

Conclusions:

The findings suggest that for weak turbulence, variations in source temporal coherence do not significantly degrade imaging system performance.
This research provides insights into the robustness of imaging systems against atmospheric turbulence effects.