Tunable Bessel Beam Objectives for Precision Micromachining

Описание: Tunable Bessel Beam Objectives for Precision Micromachining
Contact us for technical guidance or a quote: [email protected]
http://www.dmphotonics.com

The Variable Bessel (VB) Objective is an advanced beam-shaping optical solution designed to generate controllable Bessel-like beams for precision laser processing. Unlike conventional Gaussian-beam focusing optics, this objective enables dynamic control over the beam’s axial intensity distribution, producing an extended focal region with a narrow central core and concentric energy rings. This unique propagation behavior allows consistent energy delivery over long depths of focus, even in demanding industrial environments.

A defining feature of the VB Objective is tunability. By adjusting internal optical parameters, users can vary the effective Bessel length, core diameter, and energy distribution to match specific process requirements. This flexibility makes the objective suitable for a wide range of transparent and brittle materials, where process windows are narrow and repeatability is critical. The extended focus reduces sensitivity to sample tilt, thickness variations, and Z-axis positioning errors, enabling more stable and scalable manufacturing workflows.

Bessel-type beams are known for their self-healing properties, meaning the central core can reconstruct after partial obstruction by debris, plasma, or imperfections in the material. In laser cutting and internal modification processes, this translates into cleaner interaction zones, reduced edge chipping, and improved cut uniformity compared to standard focusing optics. The VB Objective leverages this physics while adding user control, allowing optimization for different substrates and laser regimes.

The optical design is optimized for high-power and ultrafast laser sources, including picosecond and femtosecond systems commonly used in precision micromachining. High damage threshold materials and careful aberration control ensure reliable operation at high average powers and high repetition rates. Objective-style mechanical formats allow straightforward integration into existing laser heads, scanners, and motion systems without extensive redesign.

Typical applications include glass cutting and dicing, internal modification of transparent substrates, sapphire and ceramic processing, display glass separation, and advanced micromachining tasks that benefit from elongated interaction regions. The ability to tailor the beam profile helps balance processing speed, edge quality, and thermal impact, supporting both R&D and high-volume production environments.

Overall, the Variable Bessel Objective represents a shift from fixed-geometry focusing optics toward process-adaptive beam delivery. By combining non-diffraction beam behavior with practical tunability and industrial robustness, it enables higher yield, tighter tolerances, and greater flexibility in modern laser manufacturing systems.

Del Mar Photonics, Inc. is a leading manufacturer and system integrator of advanced photonics products for scientific and industrial applications. We offer a comprehensive range of lasers, optics, optical crystals, and related instrumentation to support cutting-edge research and development. Our unique capability lies in delivering fully customized optical components and assemblies that combine nanometer-level precision fabrication across the UV to far-IR spectrum with advanced durable coatings, ensuring high-performance, environmental resilience, and laser-ready operation.
We welcome opportunities to collaborate with researchers and instrumentation developers on custom OEM systems tailored to specific application needs. Contact us for technical guidance or a quote: [email protected]
http://www.dmphotonics.com

#VariableBessel
#BesselBeam
#LaserBeamShaping
#GlassCutting
#LaserMicromachining
#UltrafastLasers
#FemtosecondLaser
#PicosecondLaser
#TransparentMaterials
#PrecisionManufacturing
#ExtendedDepthOfFocus
#NonDiffractingBeams
#AdvancedOptics
#IndustrialPhotonics
#SPIEPhotonicsWest
#LaserProcessing
#OpticalEngineering