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Numerical simulator of atmospherically distorted phase screen for multibeam time-dependent scenario
Applied Optics
|August 5, 2014
Summary
This study introduces a turbulence phase screen simulator. The enhanced method allows for broader applications in multibeam scenarios, validating results against the Kolmogorov model.
Area of Science:
- Optics and Photonics
- Computational Physics
Background:
- Turbulence phase screens are crucial for adaptive optics systems.
- Existing methods often have limitations in frequency domain and spatial sampling.
Purpose of the Study:
- To develop a numerical simulator for turbulence phase screens.
- To extend the low-frequency adding technique to the entire frequency domain.
- To enable phase screen application in multibeam time-dependent scenarios.
Main Methods:
- Utilizing a turbulence power spectrum density-based approach.
- Extending the low-frequency adding technique within a fast Fourier transform framework.
- Applying the Kolmogorov turbulence model for validation.
Main Results:
- The simulator overcomes limitations of spatial sampling in frequency and spatial domains.
- Phase screens are applicable to multibeam time-dependent scenarios.
- Validation using structure function, modulation transfer function, and Zernike coefficient variance shows good agreement with theoretical results.
Conclusions:
- The developed numerical simulator provides a versatile tool for turbulence phase screen generation.
- The extended frequency domain technique enhances applicability in complex optical systems.
- Simulation results confirm the accuracy and reliability of the developed method.
