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Direct compression of 170-fs 50-cycle pulses down to 1.5 cycles with 70% transmission.

ABSTRACT: We present a straightforward route for extreme pulse compression, which relies on moderately driving self-phase modulation (SPM) over an extended propagation distance. This avoids that other detrimental nonlinear mechanisms take over and deteriorate the SPM process. The long propagation is obtained by means of a hollow-core fiber (HCF), up to 6?m in length. This concept is potentially scalable to TW pulse peak powers at kW average power level. As a proof of concept, we demonstrate 33-fold pulse compression of a 1?mJ, 6?kHz, 170?fs Yb laser down to 5.1?fs (1.5 cycles at 1030?nm), by employing a single HCF and subsequent chirped mirrors with an overall transmission of 70%.

SUBMITTER: Jeong YG

PROVIDER: S-EPMC6081375 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Direct compression of 170-fs 50-cycle pulses down to 1.5 cycles with 70% transmission.

Jeong Young-Gyun YG Piccoli Riccardo R Ferachou Denis D Cardin Vincent V Chini Michael M Hädrich Steffen S Limpert Jens J Morandotti Roberto R Légaré François F Schmidt Bruno E BE Razzari Luca L

Scientific reports 20180807 1

We present a straightforward route for extreme pulse compression, which relies on moderately driving self-phase modulation (SPM) over an extended propagation distance. This avoids that other detrimental nonlinear mechanisms take over and deteriorate the SPM process. The long propagation is obtained by means of a hollow-core fiber (HCF), up to 6 m in length. This concept is potentially scalable to TW pulse peak powers at kW average power level. As a proof of concept, we demonstrate 33-fold pulse ...[more]

PMID: 30087371

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