Search
Menu
Sheetak -  Cooling at your Fingertip 11/24 LB
Photonics Dictionary

Gaussian profile

An intensity distribution (intensity as a function of radial distance from the beam center) which is given by the Gaussian function:
where: I0 is the intensity at the beam center
r is the radial distance from the beam center
ω0 is the radius at which the intensity drops to a value of 1/e², or 13.5%, or its peak value.

Since, in mathematical terms, the intensity of a Gaussian beam never drops completely to zero, it is standard to define the beam radius as the distance from the beam center to the 1/e² point.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.