Efficient and compact source of tuneable ultrafast deep ultraviolet laser pulses at 50 kHz repetition rate
Layout of the light source. A commercial laser emits 200 µJ, 220 fs pulses at 1030 nm at a repetition rate of 50 kHz. These are compressed to 13 fs duration by spectral broadening in a first gas-filled HCF and dispersion compensation by chirped mirrors (CMs) and a wedge pair. A half-wave plate (λ/2) and two reflective polarisers (Pol) form a variable attenuator. DUV pulses are generated in a second HCF filled with helium.
Abstract
We demonstrate a bright, efficient, and compact source of tuneable deep ultraviolet ultrafast laser pulses based on resonant dispersive wave emission in hollow capillary fibre. In a total footprint of only 120 cm × 75 cm, including the Yb-based drive laser, we generate pulses between 208 nm and 363 nm at 50 kHz repetition rate with a total efficiency of up to 3.6%.
Type
Publication
arXiv:2206.07103 (2022)
Christian Brahms
Assistant Professor
