finesse.thermal.hello_vinet.substrate_thermal_expansion_depth_HG00¶
- finesse.thermal.hello_vinet.substrate_thermal_expansion_depth_HG00(r, z, a, h, w, material, barrel_material=None, T_ext=293.15, n_max=0, s_max=20, root_accuracy=1e-6)¶
Computes the depth displacements throughout the bulk of an optic due to coating absorption. Displacement is in units of m per absorbed Watts for a HG00 heating beam.
- Parameters
- rndarray
Radial points
- zndarray
Longitudinal points, should sample points between -h/2 and h/2. Sampling outside this region will yield incorrect results.
- afloat
mirror radius
- hfloat
mirror thickness
- wfloat
spot size radius
- materialMaterial
Mirror substrate material, see
finesse.material- barrel_materialMaterial
Barrel cotaing material, see
finesse.material- T_extfloat, optional
External temperature surrounding mirror
- n_maxint, optional
Maximum Bessel order for expansion
- s_maxint, optional
Maximum number of zeros to compute
- root_accuracyfloat, optional
Accuracy of root finding
- Returns
- U_z_coat_per_Wndarray(shape=(z.size, r.size))
D Array of z displacements throughout the substrate per absorbed Watts of HG00 beam in coating
Notes
Solving equation 3.117 and 3.118 in [32]
Currently only works for n_max == 0.