Laser Pulse Calculator

Calculate energy, power, intensity, and fluence

Input Parameters

Full Width at Half Maximum (τ)
Pulses per unit of time (R_rep)
Output average power (P_avg)
Beam diameter at 1/e² (d)

Physics Notes:

  • Gaussian Peak Power: ~0.941 × P_rect
  • Sech² Peak Power: ~0.881 × P_rect
  • Peak Intensity/Fluence (Gaussian Spatial): 2 × (P_peak/Area)

Pulse Energy

E = P_avg / R_rep
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Pulse Separation

t_sep = 1 / R_rep
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Peak Power

Rectangular

P_peak = E / τ
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Gaussian

P_peak ≈ 0.941 × (E / τ)
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Sech²

P_peak ≈ 0.881 × (E / τ)
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Intensity & Fluence

Average Intensity

I_avg = P_avg / Area
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Average Fluence

F_avg = E / Area
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Peak Intensity (Gaussian)

I_peak = 2 × P_peak / Area
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Peak Fluence (Gaussian)

F_peak = 2 × E / Area
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Peak Intensity (Rect)

I = 2 × P_rect / Area (Gaussian Spatial)
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Peak Intensity (Sech²)

I = 2 × P_sech² / Area (Gaussian Spatial)
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Author: Hussein-Tofaili
Source
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