... 5) where kx = k0 sin is the tangential component of the wavevector, k0 = /c is the wavevector magnitude in free space, k = k0 0 is the wavevector magnitude in the medium, and is the angle between the wave propagation direction and the z axis. ...
... dK d , where g = 0, h; h is the magnitude of the reciprocal lat tice vector whose ... 0 + h h k + is the square of the magnitude of the wave vector for the forward wave ...
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