Multi-terawatt femtosecond 10 µm laser pulses by self-compression in a CO2 cell

Paris Panagiotopoulos, Michael G. Hastings, Miroslav Kolesik, Sergei Tochitsky, Jerome V. Moloney

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We propose and numerically investigate a novel direct route to produce multi-terawatt femtosecond self-compressed 10 µm laser pulses suitable for the next generation relativistic laser-plasma studies including laser-wakefield acceleration at long wavelengths. The basic concept involves selecting an appropriate isotope of CO2 gas as a compression medium. This offers a dispersion/absorption landscape that is shifted in frequency relative to the driving CO2 laser used for 10 µm picosecond pulse generation. We show numerically that as a consequence of low losses and a broad anomalous dispersion window, a 3.5 ps duration pulse can be compressed to ∼300 fs while carrying ∼7 TW of peak power in less than 7 m. An interplay of self-phase modulation and anomalous dispersion leads to a ∼3.5 times compression factor, followed by the onset of filamentation near the cell exit to get below 300 fs duration.

Original languageEnglish (US)
Pages (from-to)3040-3047
Number of pages8
JournalOSA Continuum
Volume3
Issue number11
DOIs
StatePublished - Nov 15 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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