Spectral Broadening And Pulse Compression Of A 400 Μ J, 20 W Yb:Kgw Laser Using A Multi-Plate Medium

Abstract

We investigate the potential of a multi-plate medium consisting of thin fused silica plates to generate few-cycle pulses from a moderately high energy (400 μJ) and average power (20 W) Yb:KGW laser centered at 1025 nm. By optimizing the thicknesses and positions of the plates, we mitigate the losses associated with spatial and spectral distortions that can accompany self-focusing in bulk solids. Pulses with an initial duration of ∼280 fs were compressed using chirped mirrors, after spectral broadening in a multi-plate medium consisting of 6 mm of fused silica in total, by a factor of >5 to 50 fs. Further spectral broadening in a second stage also consisting of 6 mm of fused silica in total enabled compression to 18 fs with 40 μJ pulse energy, with the energy efficiency limited primarily by the geometry of the chirped mirror compressors.

Publication Date

1-29-2018

Publication Title

Applied Physics Letters

Volume

112

Issue

5

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1063/1.5018758

Socpus ID

85041323990 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85041323990

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