摘要： The phase retrieval algorithm of a frequency-resolved optical gating (FROG) is generalized to handle traces seriously distorted by group delay dispersion and non-uniform phase-matching spectra arising from the nonlinear crystal. In our proof-of-concept experiments, 15 mm thick aperiodically poled lithium niobate was employed in FROG, and successfully reconstructed chirped signal pulses were actually stretched by >5 times inside the crystal. This method is particularly promising in the measurement of weak few-cycle pulses produced by supercontinuum generation in fibers. 其他題名： Opt Lett 出版者： United States 出版日期： 2016-10-01 出處： Optics letters, 2016-10, Vol.41 (19), p.4538-4541 資源來源： Optica Publishing Group Journals 識別號： ISSN: 0146-9592 識別號： EISSN: 1539-4794 識別號： DOI: 10.1364/OL.41.004538 識別號： PMID: 27749875
