350-2500 nm supercontinuum white laser enabled by synergic high-harmonic generation and self-phase modulation

PhotoniX

Table 1 Contribution of QPM band and specific QPM three-wave mixing processes to various-order HHG. k_i is the wave number of the ith HHG wave within a nonlinear crystal

HHG	Phase mismatching in three-wave mixing processes	QPM band
2nd HG	Δk₁ = k₂ − 2k₁	B1
3rd HG	Δk₂ = k₃ − k₂ − k₁	B1
4th HG	Δk₃ = k₄ − k₃ − k₁, Δk₄ = k₄ − 2k₂	B1, B2
5th HG	Δk₅ = k₅ − k₄ − k₁, Δk₆ = k₅ − k₃ − k₂	B2, B3
6th HG	Δk₇ = k₆ − k₅ − k₁, Δk₈ = k₆ − k₄ − k₂, Δk₉ = k₆ − 2k₃	B2, B3, B4
7th HG	Δk₁₀ = k₇ − k₆ − k₁, Δk₁₁ = k₇ − k₅ − k₂, Δk₁₂ = k₇ − k₄ − k₃	B3, B4, B5
8th HG	Δk₁₃ = k₈ − k₇ − k₁, Δk₁₄ = k₈ − k₆ − k₂, Δk₁₅ = k₈ − k₅ − k₃, Δk₁₆ = k₈ − 2k₄	B3, B4, B5
9th HG	Δk₁₇ = k₉ − k₈ − k₁, Δk₁₈ = k₉ − k₇ − k₂, Δk₁₉ = k₉ − k₆ − k₃, Δk₂₀ = k₉ − k₅ − k₄	B4, B5, B6
10^thHG	Δk₂₁ = k₁₀ − k₉ − k₁, Δk₂₂ = k₁₀ − k₈ − k₂, Δk₂₃ = k₁₀ − k₇ − k₃, Δk₂₄ = k₁₀ − k₆ − k₄, Δk₂₅ = k₁₀ − 2k₅	B4, B5, B6