"Sub-20 fs pulses shaped directly in the UV by an
acousto-optic programmable dispersive filter"N. Krebs, R. A. Probst, E. Riedle
Optics Express 18, 6164-6171 (2010)
Direct pulse shaping in the UV was used to compress and structure
pulses throughout the range of 250 – 400 nm. Broadband pulses generated
by SHG of a NOPA were used as input to an acousto-optic programmable
dispersive filter. As this shaper creates lateral dispersion, aspects of
Gaussian and geometric optics had to be considered for the design of the
beam path. Special care was taken to produce a homogeneous input beam.
We show nearly Fourier-limited pulses as short as 16.8 fs at 320 nm and
19.5 fs at 260 nm. Full control over amplitude and phase is demonstrated by
generating arbitrary shapes like square pulses and complex pulse sequences.
The subpulses were manipulated individually in intensity, temporal delay,
chirp, relative phase and central wavelength.
BMO authors (in alphabetic order):