We report on power scaling of Yb-doped femtosecond lasers emitting at 1030 nm with multi-mJ pulse energies from the level of several 100-W of average output power to a level exceeding 1 kW. Technological building blocks that are crucial for scaling power and pulse energy will be presented. Additionally, we highlight functionalities that have been developed and integrated into the high-power femtosecond laser systems to optimally exploit their potential in different relevant use cases for industrial applications. Moreover, the perspectives for further power and pulse energy scaling will be discussed.
We report on kW-level femtosecond lasers for flexible and high throughput industrial applications. Power scaling is achieved by a slab-based amplifier architecture. The laser concept is capable to generate high pulse energies in the multi-mJ range as well as high pulse repetition rates in the MHz or GHz ranges. Moreover, free triggering (FemtoTrig®) and burst options as well as frequency conversion to the green and UV spectral region will leverage these femtosecond lasers into future industrial applications.
We report on femtosecond lasers with more than one kilowatt of average output power and pulse energies around 10 mJ. Power scaling is enabled by scaling the crystal dimensions of the slab-like amplifier crystal as well as by applying multi-stage booster amplifier configurations. The demonstrated femtosecond laser is aimed to serve in high throughput industrial applications in the aerospace industries in order to generate hybrid laminar flow controlled structures. Further industrial and scientific applications will be reviewed as well.
We report on a kilowatt femtosecond laser with the high precision triggering function FemtoTrig® and flexible burst shapes. The high power femtosecond laser is based on a multi-stage hybrid fiber-crystal based Innoslab amplifier platform and chirped pulse amplification. The kilowatt femtosecond laser is foreseen to serve in high throughput applications integrating multiple beams generated by diffractive optical elements (DOEs) and allowing individual pulse control of the multiplexed beamlets via multi-channel acousto-optical modulators.
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