Why is my laser beam intensity profile not Gaussian?

1. Are all laser beams Gaussian?
2. What is Gaussian power intensity of laser?
3. What is Gaussian nature of laser beam?
4. What is spatial intensity profile?

Are all laser beams Gaussian?

In general, not all lasers are single mode and not all lasers are equipped with those kind of cavities (e.g., solid-state lasers). Therefore, not all laser beams are perfectly Gaussian.

What is Gaussian power intensity of laser?

Gaussian intensity distribution of a typical HeNe laser. The parameter ω₀, usually called the Gaussian beam radius, is the radius at which the intensity has decreased to 1/e2 or 0.135 of its axial, or peak value. Another point to note is the radius of half maximum, or 50% intensity, which is 0.59ω₀.

What is Gaussian nature of laser beam?

Gaussian beams form the basis of Gaussian beam optics. A Gaussian beam remains Gaussian at every point along its path of propagation through an optical system. This makes it particularly easy to visualize the distribution of a field at any point in the system.

What is spatial intensity profile?

The spatial intensity pro- file is the variation of intensity as a function of dis- tance from the center of the beam, in a plane per- pendicular to its direction of propagation. It is often convenient to think of a light wave as being an infinite plane electromagnetic wave.