Thin-Film Interference calculator

Reflection maximum of a film between lower-index media (one π phase flip, e.g. a soap film).

Category: Diffraction

Formula: 2·n·t = (m + ½)·λ

Inputs

InputParameterUnitDefault
λlamnm550
Film nn1.38
Order mm0

Result with the default inputs

  • Min thickness: 99.6377 nm
  • QWOT: 99.6377 nm

Open it with your own values: put each input in the address as a parameter, for example /calculators/thin-film-interference?lam=550. A unit other than the listed one goes in <parameter>_unit.

Read more: Wikipedia: Thin-film interference

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