Speaker
Description
Ultrashort pulse laser ablation has become an important technology for precision micro- and nanoprocessing of metals, enabling high spatial resolution, minimal thermal damage, and precise control over surface morphology. However, achieving high processing efficiency while maintaining excellent surface quality remains a major challenge, particularly in industrial applications where high throughput and reproducibility are essential. Understanding the relationships between laser processing parameters, energy deposition, and material removal mechanisms is therefore crucial for optimizing laser ablation processes.
This invited talk presents recent theoretical and experimental advances in ultrashort pulse laser ablation efficiency, with particular emphasis on laser fluence optimization. Analytical modeling, numerical simulations, and experimental results are combined to demonstrate strategies for maximizing ablation efficiency in various laser processing applications, including Gaussian beam laser ablation, thin sheet laser cutting, and laser lift-off.
Special attention is given to the influence of burst-mode irradiation on ablation efficiency and the emergence of bistable ablation regimes. The effects of plasma shielding and attenuation of incident laser radiation by ablation debris are examined to provide deeper insight into the physical mechanisms governing material removal efficiency.
The presented findings contribute to a better understanding of energy-efficient ultrashort pulse laser–matter interactions and provide practical guidelines for optimizing laser processing parameters and facilitating the transfer of ultrafast laser technologies from laboratory research to industrial manufacturing.
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