APE Spider Ultrashort Pulse Measurement

Our Spider – Spectral Phase Interferometry for Direct Electric-field Reconstruction – family is designed for phase resolved ultrafast pulse measurements. FC (Few Cycle) Spider offers a precision tool for the complete characterization of ultrashort laser pulses with just a few electric field cycles — sub 5 fs pulse width. For less broadband pulses Spider with grating stretcher is the best choice for pulses between 15 fs and 500 fs at ~ 0.8 µm or 1 µm central wavelength.

Features Spider:

• Direct measurement in the spectral domain (amplitude and phase)

• Intrinsically single shot

• Insensitive to intensity noise

• Fast and direct reconstruction mathematics

• Unambiguous in the sign of the chirp and time

• Relatively complex setup

• Different parameter ranges often require an optimised single-setup

Features Spider FC:

• Relatively simple optical setup

• Direct sampling in the time domain

• Highly variable for different parameter ranges (pulse duration, wavelength)

• Iterative fitting algorithm may make data interpretation more complex

• Measure spectrally broadband pulses in single shot often not possible