Paper 14092-13
Paper 14092-13
Post-compression of 2-µm few-ps pulses with >50 mJ energy in CaF2
13 April 2026 • 17:40 - 18:00 CEST | Churchill (Niveau/Level 1)
Abstract
We present a compact, nonlinear compression scheme for generating multi-10-mJ femtosecond pulses in the short-wave infrared. For this purpose 2.0 ps pulses at 2.05 µm, from a 1 kHz Ho:YLF chirped pulse amplifier, are spectrally broadened due to self-phase modulation in CaF2. Subsequent compression using a pair of transmission gratings delivers 770-fs pulses with an energy of 41 mJ. The compression regime takes place below the onset of filamentation, resulting in an almost undisturbed beam profile. Post-compression is associated with a loss of 25%. Despite this, the resulting peak power is a remarkable 46 GW, the highest for 2-µm sub-ps sources.
Presenter
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Uwe Griebner received the Ph.D. degree in physics from the Technical University of Berlin, Germany in 1996. His Ph.D. research was on fiber bundle lasers with high average power. Since 1992 he has been with the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy in Berlin, Germany, working on diode-pumped solid-state lasers, fiber lasers, waveguide lasers, semiconductor lasers, ultrafast lasers and amplifiers, and digital holography. He is currently focused on high-energy few-cycle pulse generation in the midwave and longwave infrared spectral range via optical parametric amplification.