We illustrate observation and characterization of medium- and low-intensity shaped ultrashort pulses at λ=1.55μm through single-shot geometry (multishot-average) second-harmonic generation–frequency-resolved optical gating. The pulses are shaped by amplitude filters in the Fourier plane of a compact folded shaper. Sensitivity to pulses with energies of less than 20 pJ and high dynamic range is reported for this configuration. Application of this method to the propagation of ~170-fs pulses through a 50-m fiber link is also illustrated.
© 1999 Optical Society of America
(320.0320) Ultrafast optics : Ultrafast optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.5540) Ultrafast optics : Pulse shaping
(320.7100) Ultrafast optics : Ultrafast measurements
F. G. Omenetto, J. W. Nicholson, and A. J. Taylor, "Second-harmonic generation frequency-resolved optical gating analysis of low-intensity shaped femtosecond pulses at 1.55 μm," Opt. Lett. 24, 1780-1782 (1999)