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| LaserBeam (const LaserBeam &)=default |
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LaserBeam & | operator= (const LaserBeam &)=default |
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| LaserBeam (LaserBeam &&)=default |
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LaserBeam & | operator= (LaserBeam &&)=default |
| std::unique_ptr< domain::BoundaryConditions::BoundaryCondition > | get_clone () const override |
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| LaserBeam (double beam_width) |
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double | beam_width () const |
| std::vector< elliptic::BoundaryConditionType > | boundary_condition_types () const override |
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void | apply (gsl::not_null< tnsr::I< DataVector, 3 > * > displacement, gsl::not_null< tnsr::I< DataVector, 3 > * > n_dot_minus_stress, const tnsr::iJ< DataVector, 3 > &deriv_displacement, const tnsr::I< DataVector, 3 > &x, const tnsr::i< DataVector, 3 > &face_normal) const |
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void | pup (PUP::er &p) override |
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| BoundaryCondition (const BoundaryCondition &)=default |
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| BoundaryCondition (BoundaryCondition &&)=default |
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BoundaryCondition & | operator= (const BoundaryCondition &)=default |
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BoundaryCondition & | operator= (BoundaryCondition &&)=default |
| Public Member Functions inherited from domain::BoundaryConditions::BoundaryCondition |
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| BoundaryCondition (BoundaryCondition &&)=default |
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BoundaryCondition & | operator= (BoundaryCondition &&)=default |
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| BoundaryCondition (const BoundaryCondition &)=default |
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BoundaryCondition & | operator= (const BoundaryCondition &)=default |
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| BoundaryCondition (CkMigrateMessage *const msg) |
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| WRAPPED_PUPable_abstract (BoundaryCondition) |
A laser beam with Gaussian profile normally incident to the surface.
This boundary condition represents a laser beam with Gaussian profile that exerts pressure normal to the surface of a reflecting material. The pressure we are considering here is
\begin{align}n_i T^{ij} = -n^j \frac{e^{-\frac{r^2}{r_0^2}}}{\pi r_0^2}
\end{align}
where \(n_i\) is the unit normal pointing out of the surface, \(r\) is the coordinate distance from the origin in the plane perpendicular to \(n_i\) and \(r_0\) is the "beam width" parameter. The pressure profile and the angle of incidence can be generalized in future work. Note that we follow the convention of [140], [138], and [212] in defining the beam width, and other publications may include a factor of \(\sqrt{2}\) in its definition.
This boundary condition is used to simulate thermal noise induced in a mirror by the laser, as detailed for instance in [140], [138], and [212]. See also Elasticity::Solutions::HalfSpaceMirror for an analytic solution that involves this boundary condition.