Efficient and compact source of tuneable ultrafast deep ultraviolet laser pulses at 50 kHz repetition rate

Abstract

Deep ultraviolet (DUV) laser pulses with tuneable wavelength and very short duration are a key enabling technology for next-generation technology and ultrafast science. Their generation has been the subject of extensive experimental effort, but no technique demonstrated thus far has been able to meet all requirements in one light source. Here 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 x 75 cm, including the ytterbium-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%. Down-scaling of the DUV generation reduces the required energy sufficiently to enable the generation of two-colour few-femtosecond DUV pulses.

arXiv comment5 pages, 5 figures

References in corpus (7)

• High-energy pulse self-compression and ultraviolet generation through soliton dynamics in hollow capillary fibres
• Generation of micro-J pulses in the deep UV at MHz repetition rates
• Infrared attosecond field transients and UV to IR few-femtosecond pulses generated by high-energy soliton self-compression
• Resonant dispersive wave emission in hollow capillary fibres filled with pressure gradients
• Direct characterisation of tuneable few-femtosecond dispersive-wave pulses in the deep UV
• High-energy ultraviolet dispersive-wave emission in compact hollow capillary systems
• Long-lived refractive index changes induced by femtosecond ionization in gas-filled single-ring photonic crystal fibers

Cited by in corpus (2)

• Highly efficient DUV generation at 100 kHz via Yb pumped four-wave mixing in stretched hollow-core fibers
• Ultrafast Saddletronics