Laser Drilling Fine Technology.

New Drilling Technology

Cunningham is vice president in charge of the regional section of the Atlanta Fed's research department. Mancuso is an analyst in the regional section. They thank Jimmy Stone of Stone Energy, David Guidry of Guico Machine Works, and Frank King and Will Roberds for insightful discussion and comments. Shocks are mostly of concern when the potential outcome is bad. The most infamous example of a n...

Vibration-Assisted Femtosecond Laser Drilling with Controllable Taper Angles for AMOLED Fine Metal Mask Fabrication

This study investigates the effect of focal plane variation using vibration in a femtosecond laser hole drilling process on Invar alloy fabrication quality for the production of fine metal masks (FMMs). FMMs are used in the red, green, blue (RGB) evaporation process in Active Matrix Organic Light-Emitting Diode (AMOLED) manufacturing. The taper angle of the hole is adjusted by attaching the obj...

A simple model for laser drilling

A simple mathematical model of laser drilling is proposed. Assuming axi-symmetry of the process around the axis of the laser beam, a one-dimensional formulation is obtained after cross-sectional averaging. The novelty of the approach relies on the fact that even after dimension reduction, the shape of the hole can still be described. The model is derived, implemented and validated for drilling ...

Laser Drilling Assisted with Jet Electrochemical Machining

Micro-hole drilling with femtosecond fiber laser

In this paper, micro-hole drilling in ambient air is presented using fs fiber laser (750 fs & 1030 nm). Micro holes were fabricated in both transparent (glasses) and non-transparent materials (metals and tissues). Hole shape and morphology was characterized and evaluated with optical microscope and scanning electron microscopy (SEM). Debris-free micro holes with good roundness and no thermal da...