Near-infrared conical emission from 800 nm filament in air

D. E. Shipilo, D. V. Pushkarev, N. A. Panov, D. S. Uryupina, V. A. Andreeva, R. V. Volkov, A. V. Balakin, A. P. Shkurinov, I. Babushkin, U. Morgner, O. G. Kosareva, A. B. Savel'Ev

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We used a single shot imaging technique to register frequency-angular distribution at different positions along the filament of 55 fs 800 nm pulse focused with the numerical aperture of about 1/600 into air. We have revealed that the phenomena accompanying filamentation develop successively in the propagation direction. The conical emission in the visible comes first. Later in the propagation the conical emission in the infrared appears and develops down to 900 nm at least. Multiple robust light bullets become the secondary sources of the conical waves on the infrared side of the spectrum. The overall scenario of the nonlinear phenomena successive appearance in air is for the first time unified in one experiment in atmospheric gases and simulated with the carrier wave resolved in agreement with the experiment.

Original languageEnglish (US)
Article number035401
JournalLaser Physics Letters
Volume14
Issue number3
DOIs
StatePublished - Mar 2017

Keywords

  • conical emission
  • femtosecond filamentation
  • supercontinuum

Fingerprint Dive into the research topics of 'Near-infrared conical emission from 800 nm filament in air'. Together they form a unique fingerprint.

Cite this