Equation icon  Minimum spot size for a laser

 
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Resource type: Equation
Description: This equation gives the minimum spot radius for a laser beam, based on beam mode and optic geometry. This corresponds to the part of the beam with highest radiant power.

TeX format: {W_0 = \frac{4M^2f \lambda}{\pi D_L}}

W0 {W_0} = minimum spot radius (m) {m}
M {M} = beam mode
f {f} = focal length of lens (m) {m}
λ {\lambda} = wavelength of beam (m) {m}
DL {D_L} = diameter of beam at lens (m) {m}

Keywords: rapid prototyping • energy • density • manufacturing • processing • laser • beam • sintering • melting • cutting • SLM • SLS • SLA • stereolithography • spot size
Categories: Science approaches
Processes > Shaping > Powder methods
Processes > Shaping > Rapid prototyping
Processes > Surface treatments > Heat treatments
Processes > Thermal treatments > Sintering
Applications > Manufacturing & industry
Properties > Electrical, magnetic & optical > Optical
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
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Date created: 18 August 2010
Date added: 14 September 2010
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Resource ID: 3215