Qmix — Custom crystals

Crystal name

Type

Range min (nm)

Range max (nm)

Refractive-index model used for custom crystals

n(λ,T) = sqrt(abs(A + B / (λ² - C) - Dλ²)) + Δn(λ,T)

λ is in micrometers. Enter one row of A B C D coefficients for each principal index. Extra values in a row are ignored by this page.

Sellmeier coefficients (A B C D per row, λ in µm)

n_o / n_x

n_e / n_y

Temperature correction

Nonlinear model used by the uniaxial Qmix calculation

d1 = A cosθ + B sinθ

d2 = C cos²θ + D sin(2θ)

These values are stored with the custom crystal and used by the standard uniaxial phase-matching calculation. Biaxial custom nonlinear tensors are not fully represented by this simplified form.

Nonlinear coefficients Uniaxial: d₁ = A·cosθ + B·sinθ, d₂ = C·cos²θ + D·sin2θ

d1 cos(A)

d1 sin(B)

d2 cos²(C)

d2 sin2(D)

Miller λ ref (nm)