Wikipedia:Articles for deletion/Spectral purity


 * The following discussion is an archived debate of the proposed deletion of the article below. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review).  No further edits should be made to this page.

The result was   keep. NorthAmerica1000 02:00, 27 December 2014 (UTC)

Spectral purity

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"Spectral purity" is not at all a well-defined concept, and certainly not as defined here. $$\frac{\triangle v}{v}$$ is not 'particularly important', in fact it is close to meaningless. Physicists use linewidth $$\triangle v$$ instead, which is much more useful.

When use in the scientific literature, "spectral purity" usually refers to the ratio of amplified spontaneous emission and/or side modes to the main laser line. — Preceding unsigned comment added by 2001:630:12:10C0:9E8E:99FF:FEE3:4FDF (talk) 16:39, 12 December 2014 (UTC)
 * Comment - I completed the AfD for the IP. ansh666 19:52, 12 December 2014 (UTC)


 * Keep The concept seems clear enough. The article already has a source and more sources such as this, which refutes the claims of the nomination, seem easy to find. Andrew D. (talk) 20:22, 12 December 2014 (UTC)
 * Note: This debate has been included in the list of Science-related deletion discussions.   20:41, 12 December 2014 (UTC)

 Relisted to generate a more thorough discussion so a clearer consensus may be reached.
 * Keep Notable concept that can be improved by editing. --Kkmurray (talk) 05:04, 13 December 2014 (UTC)

Please add new comments below this notice. Thanks, NorthAmerica1000 00:38, 20 December 2014 (UTC)
 * Keep - it's a real thing in both signal processing and lasers. However, since I can't find a source for that formula, I'm deleting it. If someone else can find a source, feel free to put it back, preferably with an indication as to which field it is applicable. PianoDan (talk) 15:37, 24 December 2014 (UTC)
 * The above discussion is preserved as an archive of the debate. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.