| dbo:abstract |
Die Beugungsmaßzahl ist eine Größe der Dimension Zahl, die einen Laserstrahl charakterisiert: je größer desto schlechter ist der Strahl zu fokussieren, d. h. desto größer ist der kleinste mögliche Fokusdurchmesser. (de) In laser science, the parameter M2, also known as the beam propagation ratio or beam quality factor is a measure of laser beam quality. It represents the degree of variation of a beam from an ideal Gaussian beam. It is calculated from the ratio of the beam parameter product (BPP) of the beam to that of a Gaussian beam with the same wavelength. It relates the beam divergence of a laser beam to the minimum focussed spot size that can be achieved. For a single mode TEM00 (Gaussian) laser beam, M2 is exactly one. Unlike the beam parameter product, M2 is unitless and does not vary with wavelength. The M2 value for a laser beam is widely used in the laser industry as a specification, and its method of measurement is regulated as an ISO Standard. (en) |
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| rdfs:comment |
Die Beugungsmaßzahl ist eine Größe der Dimension Zahl, die einen Laserstrahl charakterisiert: je größer desto schlechter ist der Strahl zu fokussieren, d. h. desto größer ist der kleinste mögliche Fokusdurchmesser. (de) In laser science, the parameter M2, also known as the beam propagation ratio or beam quality factor is a measure of laser beam quality. It represents the degree of variation of a beam from an ideal Gaussian beam. It is calculated from the ratio of the beam parameter product (BPP) of the beam to that of a Gaussian beam with the same wavelength. It relates the beam divergence of a laser beam to the minimum focussed spot size that can be achieved. For a single mode TEM00 (Gaussian) laser beam, M2 is exactly one. Unlike the beam parameter product, M2 is unitless and does not vary with wavelength. (en) |
| rdfs:label |
Beugungsmaßzahl (de) M squared (en) |
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freebase:M squared wikidata:M squared dbpedia-de:M squared https://global.dbpedia.org/id/5183n |
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