- #1
n0_3sc
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Homework Statement
I need to solve the following wave equation:
[tex]
[\nabla^2 + \frac{\omega_a^2}{c^2}\epsilon]\mathbf{E_a} = -\frac{4\pi\omega_a^2}{c^2}\mathbf{P}^{(3)}
[/tex]
Homework Equations
[tex]
\mathbf{P}^{(3)}=\chi^{(3)}:\mathbf{E_1E_1E_2^*}
[/tex]
E_1 and E_2 are two electric fields with different frequencies.
The Attempt at a Solution
I'm not sure how to attempt the problem. A starting point would be good.