SEA-F-SPIDER is a variant of SPIDER that uses spatial encoding of the phase and direct spectral filtering to produce the quasi-monochromatic ancilla pulses. SEA-F-SPIDER inherits the advantages of SEA-SPIDER. The spectral phase is sampled at the spectrometer resolution and some spatio-temporal couplings can be recovered. The high accuracy in the determination of the upconversion frequency and shear makes SEA-F-SPIDER an ideal tool for the full charcterisation of few-cycle pulses. Due to the nature of the sum-frequency mixing employed to create the spectrally sheared copies of the unknown pulse pulses with greater than octave bandwidths can be characterised. This has been useful in the Kagome project.
Relevant Publications:
Witting, Tobias, Felix Frank, Christopher A Arrell, William A Okell, Jonathan P Marangos, and John W G Tisch. “Characterization of High-Intensity Sub-4-Fs Laser Pulses Using Spatially Encoded Spectral Shearing Interferometry.” Optics Letters 36, no. 9 (May 2011): 1680–82. link
Witting, T., S. J. Weber, J. W. G. Tisch, and J. P. Marangos. “Spatio-Temporal Characterization of Mid-Infrared Laser Pulses with Spatially Encoded Spectral Shearing Interferometry.” Optics Express 20, no. 27 (December 17, 2012): 27974–80. doi:10.1364/OE.20.027974. link