Abstract

This paper suggests that the linear interferometric correlation (LFC) can be used to measure pulse duration of a few cycles, single cycle or even sub-cycle light pulse. The relations between pulsewidth and LFC curve are derived for Gaussian- and hyperbolic secant-shaped pules. This new method abandons focusing, frequency doubling and filtering in the traditional second order correlation method, meanwhile the signal-to-noise ratio (SNR) is improved.

© 2005 Chinese Optics Letters

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