Ultra-short pulse lasers have become indispensable in industrial and scientific micro-processing applications, offering advantages like surface texturing, treatment, drilling, and micro-welding. However, these applications also present unique challenges, including process speed, precision, and seamless integration into industries. This paper explores how beam shaping addresses these challenges in micro-processing. Various beam shapes, such as beam splitting, non-diffractive beams, top-hat shaping, U-shaped beams, and triangular beams, are discussed for improving process speed, precision, and integration of ultra-short pulse lasers. The paper also addresses the challenges of fibering the laser for industrial integration and how beam shaping overcomes these hurdles. In conclusion, beam shaping proves to be a valuable tool for tackling the unique challenges of micro-processing with ultra-short pulse lasers, enhancing process speed, precision, and integration into various applications.
We describe how to improve micro-processing using Second Harmonic Generation of a Ultra-Short Pulse laser combined with a Multi-Plane Light Conversion beam-shaper.
Manufacturing at 515nm presents advantages compared to 1030nm : extended depth of field, higher sharpness, and higher ablation efficiency for some materials. The beam-shaper provides a square top-hat with a 1/10 sharpness and an extended depth of field up to 10 times higher compared to other beam-shaping technologies.
We describe process results of different metal samples: LIPSS generation with a 100µm square targeting a period down to 0,5µm and holes drilling holes of a diameter smaller than 10µm.
Femtosecond lasers are available with an increasing energy per pulse. Their efficient exploitation without any decrease of quality is key. It could be done with beam-splitting and parallel processing.
We present a fully reflective CANUNDA-SPLIT module used with a 100W 1030nm 500fs laser and a 100mm F-theta. The uniformity of the beams over the Field of View is presented.
The drilling of stainless steel and Nickel cavities matrices, designed for tribological properties improvement, has been performed. The homogeneity of the cavities and the circularity are analyzed. These results paves the way to meter-scale area processing with a reduced processing time.
In this contribution, we will report on a new adventure in the field of photonics, combining the optical control of photonic materials with that of true micro meter scale robotics. We will show how one can create complex photonic structures using polymers that respond to optical stimuli, and how this technology can be used to create moving elements, photonic skin, and even complete micro meter size robots that can walk and swim. Using light as the only source of energy. The materials that we have developed to that end can also be used to realize tunable photonic components that respond to light and adapt their photonic response on the basis of the illumination conditions.
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