Our stretched-flexible hollow-core fiber (SF-HCF) compressor SAVANNA-HP is tailored to those seeking high power laser compression, high compression factors (5-30x), or simply prefer a SF-HCF over a capillary system.

Just like in any classic hollow-core fiber compressor, the femtosecond pulses are broadened through nonlinear interaction with an adjustable noble gas pressure inside a hollow fiber and the resulting supercontinuum is then compressed using chirped mirrors.

To bring to the market a state-of-the-art SF-HCF technique, we established a collaboration between UltraFast Innovations (UFI®) and the Institute for Nanophotonics IFNANO in Göttingen. The fiber assembly from IFNANO is exceptionally robust and easy to align and enables nearly ideal wave-guiding with minimal losses, allowing self-phase modulation over an interaction length of up to 8 m. The incoupling is protected by a high-power shield, allowing input pulse parameters of few tens of mJ and up to 20 W average power (with active cooling up to several hundred Watts). By combining IFNANO's SF-HCFs and our chirped mirror compression, we offer an exceptional compression unit for modern lasers.