A Gaussian-beam lift-off model shows maximum removed area occurs at peak fluence e F_th with closed-form expressions for optimal radius and focus position, validated experimentally on picosecond copper oxide removal.
Influence of Nonlinear and Saturable Absorption on Laser Lift-off Threshold of an Oxide/Metal Structure
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Efficient Picosecond-Laser Lift-Off of Copper Oxide from Copper: Modelling and Experiment
A Gaussian-beam lift-off model shows maximum removed area occurs at peak fluence e F_th with closed-form expressions for optimal radius and focus position, validated experimentally on picosecond copper oxide removal.