Nonlinear and Raman response

The third-order response depends on the optical process and its frequencies. Raman response also requires a distinction between electronic, vibrational, and rotational parts, and between a line’s strength and the response in time.

The Quick start gives examples of a Kerr coefficient and a Raman response. Continue below for their conventions, physical models, support, and validation. Use Conventions for shared units and states. The next chapter is Ionisation.

• Third-order nonlinearity
• Third-order conventions
• Third-order models and fits
• Third-order support and resonance limits
• Third-order accuracy
• Third-order extrapolation
• Raman lines
• The Raman response
• Raman validation and limitations

The nonlinear gallery illustrates these responses. Reference interfaces include optmat.gas.nonlinear, optmat.gas.raman, and optmat.gas.raman_response.