Carrier-envelope phase on-chip scanner and control of laser beams

Václav Hanus (), Beatrix Fehér, Viktória Csajbók, Péter Sándor, Zsuzsanna Pápa, Judit Budai, Zilong Wang, Pallabi Paul, Adriana Szeghalmi and Péter Dombi ()
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Václav Hanus: Wigner Research Centre for Physics
Beatrix Fehér: Wigner Research Centre for Physics
Viktória Csajbók: Wigner Research Centre for Physics
Péter Sándor: Wigner Research Centre for Physics
Zsuzsanna Pápa: Wigner Research Centre for Physics
Judit Budai: ELI-ALPS Research Institute
Zilong Wang: Ludwig-Maximilians-Universität
Pallabi Paul: Institute of Applied Physics, Abbe Center of Photonics
Adriana Szeghalmi: Institute of Applied Physics, Abbe Center of Photonics
Péter Dombi: Wigner Research Centre for Physics

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract The carrier-envelope phase (CEP) is an important property of few-cycle laser pulses, allowing for light field control of electronic processes during laser-matter interactions. Thus, the measurement and control of CEP is essential for applications of few-cycle lasers. Currently, there is no robust method for measuring the non-trivial spatial CEP distribution of few-cycle laser pulses. Here, we demonstrate a compact on-chip, ambient-air, CEP scanning probe with 0.1 µm3 resolution based on optical driving of CEP-sensitive ultrafast currents in a metal−dielectric heterostructure. We successfully apply the probe to obtain a 3D map of spatial changes of CEP in the vicinity of an oscillator beam focus with pulses as weak as 1 nJ. We also demonstrate CEP control in the focal volume with a spatial light modulator so that arbitrary spatial CEP sculpting could be realized.

Date: 2023
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DOI: 10.1038/s41467-023-40802-z

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