Amplitude ambiguities in second-harmonic-generation frequency-resolved optical gating:comment

摘要

The authors of an earlier paper [Opt. Lett. 32, 3558 (2007)] reported two “ambiguities” in second-harmonic-ngeneration frequency-resolved optical gating (FROG). One ambiguity is simply wrong—a miscalculation.nThe other is well known and easily avoided in simple well-known FROG variations. Finally, the authors’nmain conclusion—that autocorrelation can be more sensitive to pulse variations than FROG—is also wrong.n© 2009 Optical Society of America