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Modal decomposition of partially coherent beams using the ambiguity function
1Technische Universität Berlin, Optisches Institut, Germany. laabs@boulder.nist.gov
Summary
This study introduces a new method to analyze partially coherent optical beams using phase-space representations. The technique decomposes beams into Hermite-Gaussian modes, revealing their properties for advanced beam characterization.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Beam Characterization
Background:
- Phase-space representations like the ambiguity function and Wigner distribution function are crucial for characterizing optical beams.
- Extracting beam properties such as propagation factor and coherence information from these representations is of growing interest.
Purpose of the Study:
- To propose a novel method for decomposing partially coherent beams into Hermite-Gaussian modes.
- To retrieve modal weights and phase relations of these modes using phase-space representations.
Main Methods:
- Utilizing the ambiguity function for the decomposition of partially coherent beams.
- Applying the method to the Wigner distribution function for comprehensive analysis.
Main Results:
- Successfully retrieved modal weights and phase relations of Hermite-Gaussian modes from partially coherent beams.
- Demonstrated the applicability of the method for beam characterization.
Conclusions:
- The proposed method offers an effective way to decompose partially coherent beams into Hermite-Gaussian modes.
- This technique enhances the characterization of optical beams using phase-space representations.