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Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Automated spatiotemporal diffraction of ultrashort laser pulses
Joshua C Vaughan1, T Feurer, Keith A Nelson
1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Abstract:
We exploit the close similarities between time-frequency and position-wave-vector correspondences to control the spatiotemporal diffraction pattern of ultrashort laser pulses. This approach permits novel, automated generation of sophisticated two-dimensional femtosecond waveforms. A two-dimensional space-time version of a Gerchberg-Saxton algorithm is used to iteratively determine the phase pattern in position-frequency space that produces a user-defined intensity profile in wave-vector-time space.
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