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Chirped pulses sum frequency generation for deep-UV picosecond pulse shaping
(2012)
We show by experiments and simulations that properly chirped laser pulses enable efficient and broadband sum frequency generation in nonlinear crystals. We achieved high energy, picosecond deep-UV pulses with spectral ...
Deep-ultraviolet picosecond flat-top pulses by chirp-matched sum frequency generation
(2012)
Picosecond, flat-top, deep-UV pulses are needed to generate high-brightness electron beams to efficiently drive x-ray free electron lasers. Current metal photocathodes have low efficiency and therefore require high-energy ...