CHEMISTRY CALCULATORS
Two-Photon Absorption Calculator
Effortlessly calculate two-photon absorption properties of materials for advanced research.
What is the Two-Photon Absorption Calculator & How does it work?
Two-photon absorption is a nonlinear optical process where a material absorbs two photons simultaneously, resulting in the excitation of an electron from the ground state to an excited state. This phenomenon is crucial in various applications such as laser physics and spectroscopy.The cross-section depends on the material’s electronic structure and the energy of the photons. Accurate calculation requires knowledge of the material’s properties and the photon energies involved.
\sigma^{(2)} = \frac{8\pi^3}{3c^2} \cdot \left| \langle 0 | \hat{E}(t_1) \hat{E}(t_2) | 1 \rangle \right|^2
\sigma^{(2)} = Two-photon absorption cross-section
c = Speed of light in vacuum
| \langle 0 | \hat{E}(t_1) \hat{E}(t_2) | 1 \rangle |^2 = Squared transition dipole moment
c = Speed of light in vacuum
| \langle 0 | \hat{E}(t_1) \hat{E}(t_2) | 1 \rangle |^2 = Squared transition dipole moment
Parameters
Two-Photon Absorption Cross-Section (m²)—
Results are for informational purposes only and do not constitute professional advice.