Theory of multicolor soliton microcombs.

• Tác giả: Austin Lin, C Martijn de Sterke, Antoine F J Runge, Carlo Silvestri, Justin Widjaja
• Ngôn ngữ: eng
• Thông tin xuất bản: United States : Optics letters , 2025
• Bộ sưu tập: NCBI
• ID: 707481

Tóm tắt

We present a general theory of multicolor soliton microcombs. These frequency combs require engineered dispersion and have an optical spectrum consisting of multiple spectral windows. Our theory is based on a multiple-scale approach applied to the Lugiato-Lefever equation (LLE) and provides a framework to investigate different pumping configurations. For multi-frequency pumping, we predict a decreasing pumping threshold as the number of spectral windows increases due to an enhanced effective nonlinear parameter. However, comb formation does not require multi-frequency pumping and can emerge even with a single driving field.