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Control of ultrafast pulses in a hydrogen-filled hollow-core photonic-crystal fiber by Raman coherence

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Belli,  Federico
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
School of Engineering and Physical Sciences, Heriot-Watt University;

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Abdolvand,  Amir
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Nanyang Technological University;

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Travers,  John
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
School of Engineering and Physical Sciences, Heriot-Watt University;

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Russell,  Philip
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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引用

Belli, F., Abdolvand, A., Travers, J., & Russell, P. (2018). Control of ultrafast pulses in a hydrogen-filled hollow-core photonic-crystal fiber by Raman coherence. Physical Review A, 97:, pp. 1-5. doi:10.1103/PhysRevA.97.013814.


引用: https://hdl.handle.net/21.11116/0000-0003-9E08-3
要旨
We present the results of an experimental and numerical investigation into temporally nonlocal coherent interactions between ultrashort pulses, mediated by Raman coherence, in a gas-filled kagome-style hollow-core photonic-crystal fiber. A pump pulse first sets up the Raman coherence, creating a refractive index spatiotemporal
grating in the gas that travels at the group velocity of the pump pulse. Varying the arrival time of a second, probe, pulse allows a high degree of control over its evolution as it propagates along the fiber through the grating. Of particular interest are soliton-driven effects such as self-compression and dispersive wave (DW) emission. In the experiments reported, a DW is emitted at ∼300 nm and exhibits a wiggling effect, with its central frequency oscillating periodically with pump-probe delay. The results demonstrate that a strong Raman coherence, created in a broadband guiding gas-filled kagome photonic-crystal fiber, can be used to control the nonlinear dynamics of ultrashort probe pulses, even in difficult-to-access spectral regions such as the deep and vacuum ultraviolet.