We focus intense effort on laser micro-material processing using ultra-short laser pulses, covering everything from process development, to process management, to control systems.
Our specialist field is laser micro-processing with high throughput and utmost precision on various materials.
We optimise the efficiency of processes and material removal strategies as well as beam guidance and beam formation methods. We also develop solutions for synchronisation between highly repetitive lasers (MHz range) and beam guidance and processing systems for maximum precision.
Our expertise and infrastructure is available to external partners for student theses, research projects or joint projects funded by third parties. Please contact us if you require more details or you can find further information here:
We focus on the following key topics:
We use our short (ns) and ultra-short (ps, fs) pulsed lasers to remove layers from and structure various materials, such as metals, ceramics, semi-conductors, plastics, glass and crystals. Our priority is optimising the material removal process and increasing its efficiency.
We draw up strategies and methods for the targeted creation of surface structures with dimensions from sub-µm to the mm range.
Our broad, in-depth expertise means that we can develop and implement processes specifically optimised to your application.
By synchronising scanners (galvo or polygon scanners) with the laser pulse with repetition rates of up to several MHz, we achieve highest levels of precision which cannot be achieved with conventional methods. A patented technology developed in-house is deployed for galvo scanners.
In tandem with I3S, our sister institute, we combine scanner systems (galvo and polygon) with various mechanical axes (linear and rotation axes) to optimally implement your processes. We use our own synchronisation technology for the highest level of precision.
We test and qualify new components (laser and beam guidance) specifically for laser micro-processing applications
We can measure both the refraction and absorption index of metals based on temperature from solid to liquid states.
Our climate-controlled laser lab has the following equipment in addition to the components listed separately further down:
DUETTO: Pico-second laser system (Time Bandwidth Products):
DUETTO Burgdorf amplifier:
Optional amplifier with pulse-picker for the DUETTO system described above. This extends the range of possible pulse energies up to 600 μJ and the pulse repetition rates from 50 kHz to single-shot operation.
FUEGO: Pico-second laser system (Time Bandwidth Products):
PICOBALDE II: Pico-second laser system (Lumemtum):
SATSUMA HPII: Femtosecond laser system (Amplitudes Systèmes):
IPG ns fibre laser @ 1064 nm
The industry-compatible, pulsed ytterbium fibre laser from IPG provides pulse energy up to 1 mJ with beam quality of M2 < 2. Eight different pulse durations are available in the ns range, enabling process optimisation and process studies.
Specifications:
IPG ns fibre laser @ 532 nm
The frequency-doubled, pulsed ytterbium fibre laser from IPG provides pulse energy of up to 16 μJ with beam quality of M2 < 1.2
Specifications:
Galvo-scanner:
Galvanometer scanners are ideal for surface structuring. Various intelliSCAN and excelliSCAN systems for all three wavelengths with lenses from 50 to 255 mm in focal length are used.
Polygon scanner:
Our LSE170STD polygon scanner from NextScan Technologies is available for very rapid, high-performance applications.
Contact us or meet our experts in person at various events. Collaboration produces win-win outcomes for everyone concerned – your company, society and the university.
