Talk:M squared
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This article was a redirect to beam parameter product, which covers the topic in some detail, with better writing. I propose to restore the redirect and merge any new content from here to there. --Srleffler (talk) 01:19, 6 February 2009 (UTC)
- Consider merging this page with laser beam quality? That page has definitions of M2 that are missing from this page. It links to this page as the "main article," but there's really only an introduction here...Effy Shaf (talk) 07:25, 10 May 2015 (UTC)
Inaccuracy
[edit]This article is slightly inaccurate. The size of the beam is proportional to M^2 not to M. The area of the spot size is proportional to (M^2)^2, not to M^2. Pocnil (talk) 23:57, 6 August 2012 (UTC)
- It depends on what you are comparing to. Compared to the embedded Gaussian the size certainly scales with M.--Srleffler (talk) 02:20, 7 August 2012 (UTC)
- This is indeed confusing. I did a slight revision adding in a mention that the embedded Gaussian is imaginary, and that may at least help slightly. Geoffrey.landis (talk) 16:58, 9 May 2025 (UTC)
broken link
[edit]The link to Siegmann's tutorial was broken. I uploaded the last version I have to my webspace and linked it. 62.141.180.1 (talk) 07:41, 24 June 2013 (UTC)
- Thanks. I replaced your link with a link to a durable archive. --Srleffler (talk) 03:57, 25 June 2013 (UTC)
Much better, Thanks! 62.141.180.1 (talk) 06:00, 26 June 2013 (UTC)
Beam propagation factor vs beam quality factor
[edit]The former is the official term according to ISO 11146:2005(E), the latter is more widespread. Blumeg (talk) 09:46, 22 January 2021 (UTC)