Tim Klee
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View article: Fast ultraviolet-C photonics: generating and sensing laser pulses on femtosecond timescales
Fast ultraviolet-C photonics: generating and sensing laser pulses on femtosecond timescales Open
Photonic devices operating in the ultraviolet UV-C range (100–280 nm) have diverse applications from super-resolution microscopy to optical communications, and their advances promise to unlock new opportunities across science and technolog…
View article: Efficient generation of femtosecond deep-ultraviolet pulses by single-focus cascaded second-harmonic conversion
Efficient generation of femtosecond deep-ultraviolet pulses by single-focus cascaded second-harmonic conversion Open
We demonstrate an ultrafast deep-ultraviolet source based on single-focus fourth-harmonic (FH) generation of a 1008 kHz Yb laser (1026 nm, 215 fs, 100 nJ-level) using two stages of second harmonic generation. Two critically phase-matched c…
View article: Bayesian optimization of resonant dispersive wave generation in hollow capillary fibers
Bayesian optimization of resonant dispersive wave generation in hollow capillary fibers Open
Resonant dispersive wave (RDW) generation in hollow capillary fibers (HCFs) is a powerful technique for producing ultrashort light pulses in the deep ultraviolet range, which are important for ultrafast spectroscopy and material processing…
View article: Extension of high-harmonic generation cutoff in solids to 50 eV using MgO
Extension of high-harmonic generation cutoff in solids to 50 eV using MgO Open
High-harmonic generation (HHG) in solids driven by femtosecond lasers is a promising method for the compact production of coherent extreme ultraviolet (XUV) radiation but so far has been limited to photon energies below 40 eV. Here, we rep…