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Self-healing dynamics and absolute temporal focusing of a truncated Airy pulse under higher-order phase modulations

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Abstract

We investigate the dynamics of a temporal Airy pulse under different phase modulations inside a linear dispersive Si-based waveguide. Under third-order dispersion (TOD), the Airy pulse undergoes a temporal flipping and accelerates in the reverse direction. We show that cubic phase modulation can act as a healing effect by counterbalancing the temporal reversal, and it preserves the pulse shape. We also study the role of quadratic phase modulation (QPM) in controlling the pulse shape at the inversion point. A suitable QPM parameter can temporally compress an Airy pulse with absolute limit and leads to the formation of an amplified chirp-free Gaussian pulse useful for remote energy transfer. We provide adequate analytical and numerical simulations to understand the physical insights of the unique dynamics of a phase-modulated Airy pulse in a pure linear domain.

© 2018 Optical Society of America

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Supplementary Material (3)

NameDescription
Visualization 1       The propagation of an unmodulated truncated Airy pulse in presence of TOD with TOD parameter of value 0.25.
Visualization 2       The propagation of a cubic phase modulated truncated Airy pulse in presence of TOD with TOD parameter of value 0.3 with CPM parameter of the value1.
Visualization 3       The propagation of a quadratic phase modulated (with QPM parameter of 0.66) truncated Airy pulse in presence of TOD with TOD parameter of value 0.25. The absolute temporal focusing can be observed here.

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Equations (16)

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