Laser Amplifier Gain Calculator

Calculate small-signal gain, CW saturated gain, and pulsed energy extraction for laser amplifiers.

Amplifier Parameters
cm²
cm⁻³
cm
Small-Signal Gain
Gain coefficient (γ₀)
γ₀ = σ_em × ΔN
0.4200cm⁻¹
Single-pass gain (G₀)
G₀ = exp(γ₀ × L)
66.69×
Gain in dB
10 × log₁₀(G₀)
18.24dB
Abridged Optics — Laser Amplifier Gain Calculator v1.0CW saturation mode uses simplified deep-saturation approximation for educational purposes.

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.