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