We report on the development of FastLas, a scalable and versatile Ultra-Short Pulse (USP) laser compression technology. This system compresses down to a 50-20 fs range, USP lasers with pulse widths from 900 fs to 200 fs, energies from a few μJ to 1 mJ, average power from 100 mW to 100 W, and wavelengths from 343 nm in UV to 1.8μm in IR. It utilizes a gas-filled hollow-core photonic crystal fiber to broaden and compress any USP laser spectrum. As a result, FastLas presents an adaptable pulse compression solution, offering potential for applications in various industrial and scientific fields.
We report on a Raman laser emitting in the yellow spectral range using a CO2-filled hollow-core photonic crystal fiber. Taking advantage of a state-of-art inhibited-coupling hollow-core photonic crystal fibre, exhibiting minimum transmission loss of approximately 1 dB/km in the 500-600 nm region, we were able to develop an extremely compact and simple yellow-Raman laser scheme, allowing to emit as much as 60 mW of average power at the 574.5 nm wavelength while using a compact, microchip laser as a pump source. This solution provides an innovative and scalable alternative for the other yellow laser schemes, which are of high demand in the field of biophotonics due to their effective interaction with hemoglobin and melanin.
We report on the pulse compression performance using FastLas module for different industrial ultra-short pulse lasers. The compression module enables compression down to pulse-duration below 50 fs in most of the representative ultra-short pulse lasers with pulse-duration in the range of 700-250 fs and average power in the range of 10-100W. The overall optical transmission of the module ranges between 70% and 90%, and the output beam quality corresponds M2 of less than 1.2.
We report on the design and fabrication of inhibited-coupling guiding hollow-core photonic crystal fiber with a transmission band optimized for low loss guidance around 2 μm. Two fibers design based on a Kagome-lattice cladding have been studied to demonstrate a minimum loss figure of 25 dB/km at 2 μm associated to an ultra-broad transmission band spanning from the visible to our detection limit of 3.4 μm. Such fibers could be an excellent tool to deliver and compress ultra-short pulse laser systems, especially for the emerging 2-3 μm spectral region.
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