Single-Cycle Self-Compressed Near Infrared Pulses using High-Spatial Modes in Hollow-Core Fibers

TL;DR

This paper demonstrates soliton self-compression of near-infrared pulses in hollow-core fibers using high spatial modes, achieving single-cycle pulses without external compression, enhancing ultrashort laser applications.

Contribution

It introduces a method to generate single-cycle pulses via soliton self-compression in hollow-core fibers using high spatial modes, eliminating external compression devices.

Findings

Achieved pulse compression to the single-cycle regime.

Identified the optimal spatial mode for self-compression.

Enhanced peak power of the output pulses.

Abstract

Soliton self-compression is demonstrated during the propagation of high spatial modes in hollow core fibers in the near-infrared spectral region, taking advantage of their negative dispersion response. We have found that there is always an optimum spatial mode to observe this phenomenon, compressing the pulses down to the single-cycle regime without needing any external compression device and with a consequent increase in the output peak power. Our result is relevant for any ultrashort laser application in which few- or single-cycle pulses are crucial.