Dispersion-corrected frequency-resolved optical gating

Po Ya Wu, Hsuan Hao Lu, Ching Zhe Weng, Yen Hung Chen, Shang Da Yang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish
Pages (from-to)4538-4541
Number of pages4
JournalOptics Letters
Issue number19
StatePublished - 1 Oct 2016


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