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Spatially displaced and superposed Bessel beams for transparent material laser microprocessing
- Source :
- Journal of the Optical Society of America B. 38:3886
- Publication Year :
- 2021
- Publisher :
- Optica Publishing Group, 2021.
-
Abstract
- Invariant Bessel–Gauss beams have attracted great interest for transparent material microprocessing applications. The small central peak and elongated focal region of the zeroth-order Bessel–Gauss beam provide advantages in laser micromachining. However, many transparent material processing applications need asymmetric beams to induce directional cracking. Therefore, in this work, we investigate analytically, numerically, and experimentally a beam that was generated by spatially displaced axicon halves, which induces noncylindrical symmetry in the beam phase profile. Analytical solutions were found and verified experimentally. High power and quality beams were generated by writing a needed phase alteration of the beam with a geometric phase element. These beams were able to demonstrate applicability to micromachine processing of transparent material.
- Subjects :
- Materials science
business.industry
Phase (waves)
Statistical and Nonlinear Physics
Laser
Atomic and Molecular Physics, and Optics
Symmetry (physics)
law.invention
Axicon
symbols.namesake
Quality (physics)
Optics
Geometric phase
law
symbols
Physics::Accelerator Physics
business
Bessel function
Beam (structure)
Subjects
Details
- ISSN :
- 15208540 and 07403224
- Volume :
- 38
- Database :
- OpenAIRE
- Journal :
- Journal of the Optical Society of America B
- Accession number :
- edsair.doi...........3458bd2635db1b071f412899f0d63119