Generation of high-order harmonics with tunable photon energy and spectral width using double pulses

Amelle Zair; Lenard Gulyas Oldal; Tamas Csizmadia; Peng Ye; Nandiga Gopalakrishna Harshitha; Subhendu Kahaly; Katalin Varju; Miklos Fule; Balazs Major

doi:10.1103/PhysRevA.102.013504

Generation of high-order harmonics with tunable photon energy and spectral width using double pulses

Amelle Zair, Lenard Gulyas Oldal, Tamas Csizmadia, Peng Ye, Nandiga Gopalakrishna Harshitha, Subhendu Kahaly, Katalin Varju, Miklos Fule, Balazs Major

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

This work theoretically investigates high-order harmonic generation in rare-gas atoms driven by two temporally delayed ultrashort laser pulses. Apart from their temporal delay, the two pulses are identical. Using a single-atom model of the laser-matter interaction it is shown that the photon energy of the generated harmonics is controllable within the range of one eV - a bandwidth comparable to the photon energy of the fundamental field - by varying the time delay between the generating laser pulses. It is also demonstrated that high-order harmonics generated by double pulses have advantageous characteristics, which mimick certain properties of an extreme ultraviolet monochromator. With the proposed method, a simpler setup at a much lower cost and comparatively higher spectral yield can be implemented in contrast to other approaches.

Original language	English
Article number	013504
Journal	Physical Review A
Volume	102
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevA.102.013504
Publication status	Published - 6 Jul 2020

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abstract = "This work theoretically investigates high-order harmonic generation in rare-gas atoms driven by two temporally delayed ultrashort laser pulses. Apart from their temporal delay, the two pulses are identical. Using a single-atom model of the laser-matter interaction it is shown that the photon energy of the generated harmonics is controllable within the range of one eV - a bandwidth comparable to the photon energy of the fundamental field - by varying the time delay between the generating laser pulses. It is also demonstrated that high-order harmonics generated by double pulses have advantageous characteristics, which mimick certain properties of an extreme ultraviolet monochromator. With the proposed method, a simpler setup at a much lower cost and comparatively higher spectral yield can be implemented in contrast to other approaches.",

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AU - Zair, Amelle

AU - Gulyas Oldal, Lenard

AU - Csizmadia, Tamas

AU - Ye, Peng

AU - Gopalakrishna Harshitha, Nandiga

AU - Kahaly, Subhendu

AU - Varju, Katalin

AU - Fule, Miklos

AU - Major, Balazs

PY - 2020/7/6

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N2 - This work theoretically investigates high-order harmonic generation in rare-gas atoms driven by two temporally delayed ultrashort laser pulses. Apart from their temporal delay, the two pulses are identical. Using a single-atom model of the laser-matter interaction it is shown that the photon energy of the generated harmonics is controllable within the range of one eV - a bandwidth comparable to the photon energy of the fundamental field - by varying the time delay between the generating laser pulses. It is also demonstrated that high-order harmonics generated by double pulses have advantageous characteristics, which mimick certain properties of an extreme ultraviolet monochromator. With the proposed method, a simpler setup at a much lower cost and comparatively higher spectral yield can be implemented in contrast to other approaches.

AB - This work theoretically investigates high-order harmonic generation in rare-gas atoms driven by two temporally delayed ultrashort laser pulses. Apart from their temporal delay, the two pulses are identical. Using a single-atom model of the laser-matter interaction it is shown that the photon energy of the generated harmonics is controllable within the range of one eV - a bandwidth comparable to the photon energy of the fundamental field - by varying the time delay between the generating laser pulses. It is also demonstrated that high-order harmonics generated by double pulses have advantageous characteristics, which mimick certain properties of an extreme ultraviolet monochromator. With the proposed method, a simpler setup at a much lower cost and comparatively higher spectral yield can be implemented in contrast to other approaches.

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Generation of high-order harmonics with tunable photon energy and spectral width using double pulses

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