BBO K-space Phase Matching Map

For each signal K-vector in the displayed plane, the idler is set by K_i = K_p − K_s. The program solves the BBO dispersion relation numerically for λs and λi, then displays Δω = ωp − ωs − ωi.

Pump wavelength λp (nm) Pump propagation angle θp from optic axis z (degrees) Pump polarization Signal polarization Idler polarization Displayed plane

Grid N

Range (fraction of Kp)

Zero / yellow tolerance |Δω| / ωp Crystal temperature (°C)

BBO Sellmeier model: standard room-temperature wavelength form, with a simple temperature option omitted from the index model (temperature is displayed only for bookkeeping). λ is in μm. The map is an ideal infinite-crystal kinematic map; nonlinear coupling and finite-length sinc weighting are not included yet.

Δω > 0 Δω ≈ 0 Δω < 0

Click the map to inspect a pixel.

BBO k-space phase-matching map