Grating Resolving Power calculator

Spectral resolution R = λ/Δλ from groove density.

Category: Spectroscopy

Formula: R = m·N

Inputs

InputParameterUnitDefault
Lines/mmlpm1200
WidthWmm50
Order mm1
λlamnm550

Result with the default inputs

  • N grooves: 60000
  • Resolving R: 60000
  • Δλ: 0.0092 nm

Open it with your own values: put each input in the address as a parameter, for example /calculators/grating-resolving-power?lpm=1200. A unit other than the listed one goes in <parameter>_unit.

Read more: Wikipedia: Diffraction grating, Resolving power

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