Accession Number:

AD1104098

Title:

Chirp-Controlled Filamentation and Formation of Light Bullets in the mid-IR

Descriptive Note:

Journal Article - Open Access

Corporate Author:

Texas A and M University College Station United States

Report Date:

2019-04-18

Pagination or Media Count:

4.0

Abstract:

Formation of light bulletstightly localized in space and time light packets, retaining their spatiotemporal shape during propagationis, for the first time, experimentally observed and investigated in a new regime of mid-infrared filamentation in ambient air. It is suggested that the light bullets generated in ambient air by multi-mJ, positively chirped 3.9-micro m pulses originate from a dynamic interplay between the anomalous dispersion in the vicinity of CO2 resonance and positive chirp, both intrinsic, carried by the driver pulse, and accumulated, originating from nonlinear propagation in air. By adjusting the initial chirp of the driving pulses, one can control the spatial beam profile, energy losses, and spectral-temporal dynamics of filamenting pulses and deliver sub-3-cycle mid-IR pulses in high-quality beam on a remote target.

Subject Categories:

  • Optics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE