finesse.tracing.abcd.beamsplitter_refl_t

finesse.tracing.abcd.beamsplitter_refl_t(Rc, alpha, nr=1)[source]

Tangential (in plane-of-incidence)reflection from a curved surface at a non- normal angle of incidence. Due to coordinate system change on reflection the sagittal plane is reflected (parity operation) and an additional minus sign is applied.

Parameters:
Rcfloat

Radius of curvature of the surface being reflected from. A positive Rc means the surface appears concave to the incident beam.

alphafloat

Angle of incidence in degrees

nrfloat

refractive index of medium the reflection occurs in

Notes

See [15], table 15.1(d) and “Ray Inversion” section in 15.1