Journal
JOURNAL OF MODERN OPTICS
Volume 64, Issue 10-11, Pages 1010-1025Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2016.1271151
Keywords
Tailored femtosecond laser pulses; bichromatic fields; ultrafast polarization shaping; shaper-based pulse characterization; white light supercontinuum; ultrafast electron dynamics
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [SPP1840-QUTIF]
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We present a novel concept for the generation of ultrashort polarization-shaped bichromatic laser fields. The scheme utilizes a 4f polarization pulse shaper based on a liquid crystal spatial light modulator for independent amplitude and phase modulation of femtosecond laser pulses. By choice of either a conventional (p) or a composite (p-s) polarizer in the Fourier plane, the shaper setup enables the generation of parallel linearly and orthogonal linearly polarized bichromatic fields. Additional use of lambda/4 wave plate behind the setup yields co-rotating and counter-rotating circularly polarized bichromatic fields. The scheme allows to independently control the spectral amplitude, phase and polarization profile of the output fields, offering an enormous versatility of bichromatic waveforms.
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