Gratings
Diffraction Efficiency
Calculator
D.E. = P₁ ÷ (P₀ + P₁) × 100
P₀ — Undiffracted beam
P₁ — Diffracted beam
mW
µW
W
a.u.
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RESULT
P₀ + P₁
—
P₁ / total
—
D.E.
—
0%
50%
100%