Full-Angular Width

The Full-Angular Width calculator computes the full-angular width for a Gaussian Beam (Θ) based on the wavelength (λ) and the beam waist (ω₀).

INSTRUCTIONS: Choose units and enter the following:

• (ω₀) Beam Wais.
• (λ) Wavelength.

Full-angular Width (Θ):  The calculator returns the width in radians.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the Full-Angular Width for a Gaussian Beam is:

      Θ = (2·λ)/(π·ω₀)

where:

• Θ is the Full-Angular width for a Gaussian beam
• λ is the wavelength
• ω₀ is the beam waist

This Full-Angular Width equation^{Gaussian Beam Calculator.}

Gaussian Beam Calculators

• Rayleigh range 
• Full-angular width (Θ)
• Beam half-width
• Beam Waist

1. ^ Hecht, Eugene. "Modern Optics: Lasers and Other Topics." Optics. Reading, MA: Addison-Wesley, 2002. 618. Print.