Autocorrelator for ultrafast (femtosecond) laser diagnostics
Reef-RT autocorrelator measures laser 
pulse durations ranging from 20 femtoseconds to picosecond regime. It measures 
pulse widths from both low energy, high repetition rate oscillators and high 
energy, low repetition rate amplifiers. Compact control unit operates 
autocorrelator head and optional spectrometer through on-screen menus. 
Autocorrelation trace and spectrum can be displayed and analyzed on screen or 
downloaded to remote computer.

Other instruments for femtosecond pulse measurements:
Rincon TOAC (Third Order Cross-Correlator)
References to different publications on femtosecond pulse measurements
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