Generation of a single-cycle pulse using a two-stage compressor and its temporal characterization using a tunnelling ionization method

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Title
Generation of a single-cycle pulse using a two-stage compressor and its temporal characterization using a tunnelling ionization method
Author(s)
Sung In Hwang; Seung Beom Park; Jehoi Mun; Wosik Cho; Chang Hee Nam; Kyung Taec Kim
Publication Date
2019-02
Journal
SCIENTIFIC REPORTS, v.9, no.1, pp.1613 -
Publisher
NATURE PUBLISHING GROUP
Abstract
A single-cycle laser pulse was generated using a two-stage compressor and characterized using a pulse characterization technique based on tunnelling ionization. A 25-fs, 800-nm laser pulse was compressed to 5.5 fs using a gas-filled hollow-core fibre and a set of chirped mirrors. The laser pulse was further compressed, down to the single-cycle limit by propagation through multiple fused-silica plates and another set of chirped mirrors. The two-stage compressor mitigates the development of higher-order dispersion during spectral broadening. Thus, a single-cycle pulse was generated by compensating the second-order dispersion using chirped mirrors. The duration of the single-cycle pulse was 2.5 fs, while its transform-limited duration was 2.2 fs. A continuum extreme ultraviolet spectrum was obtained through high-harmonic generation without applying any temporal gating technique. The continuum spectrum was shown to have a strong dependence on the carrier-envelope phase of the laser pulse, confirming the generation of a single-cycle pulse. © 2019, The Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/5712
ISSN
2045-2322
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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