Thermal Lens Calculator

Estimate thermal lens focal length and dioptric power in pumped laser rods.

Input
Heat Load
Dissipated heat
P_heat = P_abs \u00d7 heat fraction
3.5W
Thermal Lens
Focal length
f_th = K\u00b7A / (P_heat\u00b7dn/dT\u00b7L)
77460mm
Focal length
77.46m
Dioptric power
1 / f_th
0.01291D (m\u207b\u00b9)
Abridged Optics — Thermal Lens Calculator v1.0f_th = K\u00b7A / (P_heat\u00b7(dn/dT)\u00b7L) \u00b7 Assumes uniform heat deposition

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.