Brewster Plane-parallel Plate

Brewster plate is characterized by its thickness L and index of refraction n. A beam falls at the face of the plate at Brewster’s angle.

Like Brewster Plane-parallel Crystal, it is also a widely used form of laser gain medium. However, when the laser rod becomes too short, it is convenient to consider it as a plane-parallel plate which is tilted at Brewster’s angle toward the beam propagation. In this case, the geometric path of the beam L_eff is slightly bigger than the thickness of the element.

Full element

Left half-pass

Right half-pass

See also

Elements Matrices, ../catalog, ../elem_props, Brewster’s angle in Wikipedia