Controlled dispersive waves emission via swallowtail-type catastrophe pulses

Area of Science:

• Nonlinear Optics
• Quantum Optics
• Laser Physics

Background:

• Dispersive waves (DWs) emission extends light source spectral range but is limited by narrowband and low power.
• Novel methods are crucial for manipulating DWs radiation for practical applications.

Purpose of the Study:

• Investigate swallowtail pulses as a novel catastrophe pulse to generate broadband, high-power DWs.
• Explore methods to manipulate DWs emission characteristics like resonant frequency and conversion efficiency.
• Analyze the impact of swallowtail pulse behavior on DWs generation and compare it with fundamental solitons.

Main Methods:

• Utilizing catastrophe integrals to analyze swallowtail pulse structure and its dependence on control parameters.
• Investigating the temporal and spectral properties of swallowtail pulses.
• Observing and analyzing the shedding of solitons and their subsequent DWs emission.

Main Results:

• Swallowtail pulses generate DWs with significantly enhanced bandwidth and power compared to conventional methods.
• Effective manipulation of DWs resonant frequency and conversion efficiency is achieved by controlling swallowtail pulse parameters.
• Swallowtail pulses shed two solitons, both radiating DWs at different frequencies.
• Reduced third-order dispersion is required for DWs emission from swallowtail pulses compared to fundamental solitons.

Conclusions:

• Swallowtail pulses offer a promising avenue for generating broadband, high-power dispersive waves.
• The inherent properties of swallowtail pulses provide a powerful tool for controlling DWs emission.
• This research paves the way for advanced broadband light sources and optical frequency combs utilizing DWs technology.