In optics, the complex beam parameter is a complex number that specifies the properties of a Gaussian beam at a particular point z along the axis of the beam. It is usually denoted by q. It can be calculated from the beam's vacuum wavelength λ0, the radius of curvature R of the , the index of refraction n (n=1 for air), and the beam radius w (defined at 1/e2 intensity), according to: . Alternatively, q can be calculated according to where z is the location at which q is calculated, relative to the location of the beam waist, zR is the Rayleigh range, and i is the imaginary unit.
Property | Value |
---|---|
dbo:abstract |
|
dbo:wikiPageID |
|
dbo:wikiPageLength |
|
dbo:wikiPageRevisionID |
|
dbo:wikiPageWikiLink | |
dbp:wikiPageUsesTemplate | |
dcterms:subject | |
rdf:type | |
rdfs:comment |
|
rdfs:label |
|
owl:sameAs | |
prov:wasDerivedFrom | |
foaf:isPrimaryTopicOf | |
is dbo:wikiPageWikiLink of | |
is foaf:primaryTopic of |