Equation icon  Minimum spot size for a laser

Use this resource: Use this resource icon
Link to this page: http://core.materials.ac.uk/search/detail.php?id=3215
View at:        
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).
Creative Commons Attribution logo
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
View the full legal code here.
Date created: 18 August 2010
Date added: 14 September 2010
Resource ID: 3215