Calculator
Fluence and irradiance of a laser pulse
Check whether your LIBS setup reaches breakdown: from pulse energy, pulse width and spot diameter you get the fluence and irradiance at focus. Default values are the LAS0070S microLaser focused to 0.2 mm.
- Fluence
- 446 J/cm²
- Irradiance
- 44.6 GW/cm²
- Peak power
- 14.0 MW
- Spot area
- 3.14e-4 cm²
Assumes a rectangular pulse and a flat-top beam. For a Gaussian beam, if the diameter is the 1/e² one, the on-axis fluence and irradiance are twice these values.