acoustotreams.AcousticMaterial.kzst

AcousticMaterial.kzst(k0, kx, ky)

The z-component of the wave vector for transverse waves.

The z-component of the wave vector is defined by \(k_z = \sqrt(k^2 - k_x^2 - k_y^2)\). The returned values have non-negative imaginary parts.

Parameters:

• k0 (float) – Angular wavenumber in the air.

• kx (float or array_like) – X-component of the wave vector. Has units of k0.

• ky (float or array_like) – Y-component of the wave vector. Has units of k0.

Returns:

complex or array_like