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Non-ideal axicon-generated Bessel beam application for intra-volume glass modification
Optics Express
|December 14, 2016
Summary
Researchers used a non-ideal Bessel beam to modify glass, observing transverse cracks. They demonstrated control over crack direction, which is important for glass cutting applications using Bessel beams.
Area of Science:
- Materials Science
- Optics and Photonics
- Laser Material Processing
Background:
- Bessel beams offer extended focal depth, beneficial for laser-based material processing.
- Non-ideal Bessel beam generation can lead to pattern distortions, impacting applications like glass cutting.
Purpose of the Study:
- To investigate bulk modifications in soda-lime glass using a non-ideal axicon-generated Bessel beam.
- To analyze the effect of beam pattern distortions on crack formation and propagation.
- To demonstrate control over transverse crack direction for improved glass cutting.
Main Methods:
- Utilized a non-ideal axicon to generate a Bessel beam for glass modification.
- Performed modeling of the Bessel beam pattern to identify distortions.
- Conducted experimental measurements of beam characteristics and induced cracks in soda-lime glass.
Main Results:
- Ellipticity of the central core diameter was observed in the non-ideal Bessel beam.
- The beam distortion led to the formation of transverse cracks within the bulk of the glass.
- The direction of transverse crack propagation was successfully controlled.
Conclusions:
- Non-ideal Bessel beams can induce controlled transverse cracking in glass.
- Controlling crack propagation is feasible and crucial for precision glass cutting applications.
- This research offers insights into optimizing Bessel beam parameters for laser glass processing.
