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Nonlinear time-lens with improved power efficiency through a discrete multilevel pump

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Abstract

We report a novel, to the best of our knowledge, all-optical discrete multilevel time-lens (DM-TL) design based on cross-phase modulation (XPM). In this approach, the pump is synthesized such as the quadratic phase modulation is applied to the probe in constant-level time-bins with a maximum phase excursion of ${2}\pi$. As a result, a considerable reduction in the required pump power is achieved in comparison to the conventional approach based on a parabolic pump. To illustrate the concept, the proposed DM-TL is here applied to the energy-preserving conversion of a continuous-wave (CW) signal into a train of pulses according to the theory of temporal Talbot array illuminators. We demonstrate CW-to-pulse conversion gains up to 12 at repetition rates exceeding 16 GHz, with a power saving with respect to the conventional parabolic TL that is more significant for increasing conversion gains.

© 2020 Optical Society of America

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Corrections

Manuel P. Fernández, Luis Romero Cortés, Saikrishna R. Konatham, Benjamin Crockett, Laureano A. Bulus-Rossini, Pablo A. Costanzo-Caso, and José Azaña, "Nonlinear time-lens with improved power efficiency through a discrete multilevel pump: publisher’s note," Opt. Lett. 45, 3860-3860 (2020)
https://opg.optica.org/ol/abstract.cfm?uri=ol-45-14-3860

25 June 2020: A typographical correction was made to p. 3560.


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