Generation of arbitrary partially coherent Bessel beam array with a LED for confocal imaging

Area of Science:

• Optics and Photonics
• Laser Physics

Background:

• Bessel beams (BBs) are crucial self-imaging beams with diverse applications in optical trapping, communication, imaging, and quantum studies.
• Existing methods for generating BB arrays can be complex and costly.

Purpose of the Study:

• To propose a novel, simpler, and more cost-effective method for generating arbitrary Bessel beam (BB) arrays.
• To demonstrate the utility of BB arrays generated from a single LED light source.

Main Methods:

• Utilizing spatially controllable incoherent point sources to generate BB array imaging.
• Theoretical deduction and analysis of the properties of the generated BB array.
• Comparison of BB arrays generated by the proposed method with those from coherent light sources.

Main Results:

• Successful generation of arbitrary (quasi-) BB arrays from a single LED source.
• The proposed method is simpler, cheaper, and more compatible than existing techniques.
• Demonstrated application of BB arrays in confocal imaging, enabling fast, super depth-of-field imaging.

Conclusions:

• The novel method provides a practical and accessible way to generate BB arrays.
• Generated BB arrays show significant promise for advanced imaging techniques and multi-particle optical manipulations.
• This technique enhances the feasibility of using BBs in various scientific and technological fields.