Supercontinuum generation in the enhanced frequency chirp regime in multipass cells

  1. Segundo Staels, Víctor W. 1
  2. Conejero Jarque, Enrique 1
  3. Carlson, Daniel 2
  4. Hemmer, Michaël 2
  5. Kapteyn, Henry C. 2
  6. Murnane, Margaret M. 2
  7. San Roman, Julio 1
  1. 1 Grupo de Investigación en Aplicaciones del Láser y Fotónica, Departamento de Física Aplicada, Universidad de Salamanca, E-37008, Salamanca, Spain
  2. 2 Department of Physics, JILA and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado, United States
Journal:
EPJ Web of Conferences

ISSN: 2100-014X

Year of publication: 2022

Volume: 266

Pages: 08014

Type: Article

DOI: 10.1051/EPJCONF/202226608014 GOOGLE SCHOLAR lock_openOpen access editor

More publications in: EPJ Web of Conferences

Abstract

We identify, via numerical simulations, the regime of enhanced frequency chirp during nonlinear propagation in multipass cell. This regime - used before the dawn of chirped pulse amplification to generate ultrashort pulses - paves the way for the generation of temporally clean few-cycle pulses. Here, we demonstrate numerically that the spectra of pulses from an Yb-based laser system can be broadened into a flat supercontinuum with a smooth spectral phase compatible with a clean few-cycle pulse with temporal secondary structures with peak intensity below 0.5% that of the main peak.

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