Experimental generation of a partially coherent flat-topped beam

Area of Science:

• Optics and Photonics
• Laser Physics
• Coherence Theory

Background:

• Partially coherent beams are crucial in various optical applications.
• Flat-topped (FT) beams offer advantages over Gaussian beams due to their uniform intensity profile.
• Generating partially coherent FT beams efficiently remains a challenge.

Purpose of the Study:

• To propose an efficient optical system for the theoretical generation of partially coherent flat-topped (FT) beams.
• To experimentally validate the proposed optical system by generating and characterizing a partially coherent FT beam.

Main Methods:

• Theoretical modeling of an optical system for FT beam generation.
• Experimental setup utilizing the proposed optical system.
• Measurement of intensity distribution.
• Measurement of the spectral degree of coherence (SDOC).

Main Results:

• Successful theoretical generation of a partially coherent FT beam.
• Experimental demonstration of the partially coherent FT beam generation.
• Measured intensity profiles matched theoretical predictions.
• Measured SDOC modulus squared confirmed beam properties and agreed with theory.

Conclusions:

• The proposed optical system is effective for generating partially coherent FT beams.
• Experimental validation confirms the theoretical model's accuracy.
• This work provides a method for creating tailored partially coherent light sources.