Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
848448 | Optik - International Journal for Light and Electron Optics | 2014 | 5 Pages |
Abstract
We discuss the disadvantage in conventional Spectral Phase Interferometry for Direct Electric-field Reconstruction (SPIDER) technology in complex femtosecond pulse measurement. An improved version of conventional technology named DC-FISH is presented, where single replica of the unknown pulse upconverts synchronously with two frequency-shifted narrow-banded long pulses. The spectral phase of the unknown pulse can be directly calculated from the fringe-free spectra with the introduction of a suitable small delay between the upconverted pulses. The numerical simulation results are achieved to identify a higher efficiency and lower requirements on measurement in novel approach.
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Authors
Liang Lei, Ziqiang Liu, Xiaobo Xing, Qu Wang, Kunhua Wen,