Laser Beam Intensity Calculator

This calculator determines the intensity of a laser beam based on its power and beam diameter.

Input Parameters

Calculation Results

Calculation Formula

Intensity (I) = Power (P) / Area (A)

Where:
I = Intensity (W/m²)
P = Laser Power (W)
A = Beam Area (m²)

Result

Beam Area:

0 m²

Intensity:

0 W/m²

Laser Beam Intensity Calculator Usage Guide

Learn how to use the Laser Beam Intensity Calculator and understand laser beam parameters

How to Use This Calculator

  1. Enter the Laser Power in watts (W). This is the total power output of your laser.
  2. Enter the Beam Diameter in millimeters (mm). This is the diameter of the laser beam at its narrowest point.
  3. Click the Calculate button to compute the beam area and intensity.
  4. Use the Reset button to clear all inputs and start over.

Understanding Laser Beam Intensity

Laser beam intensity is a measure of the power per unit area and is calculated as:

Intensity (I) = Power (P) / Beam Area (A)

Where the beam area is calculated as π × (radius)², with radius being half the beam diameter.

Applications

This calculator is useful for:

  • Understanding the energy density of laser beams
  • Designing laser-based applications (cutting, welding, processing)
  • Assessing potential hazards of laser beams
  • Comparing different laser systems

Important Notes

The calculated intensity assumes a perfectly circular beam. Real-world laser beams may have different shapes, and beam quality (M² factor) can affect the actual intensity distribution.

Always follow safety guidelines when working with lasers of any power level.