Abstract

Time grating, a temporal analogy of the diffraction grating, is proposed. In the time grating, a laser pulse is split into several embranchments, which are modulated in phase by the phase-modulation function and then combined into a short pulse train. The characteristics and dispersion of the time grating are studied theoretically. Its dispersion, similar to that of the diffraction grating, is time dependent. The characteristics of the output pulse train are controllable by the phase-modulated function. The time grating has several applications, such as in temporal spectrum measurement and in the generation of a short pulse train with arbitrary shape.

© 2013 Optical Society of America

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