finesse.tracing.abcd.beamsplitter_refl_s

finesse.tracing.abcd.beamsplitter_refl_s(Rc, alpha, nr=1)

Sagittal (perpendicular 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