Talk:Sellmeier equation
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The source of the sapphire and BK7 Sellmeier coefficients and coeffieicents for a bunch of other materials is: www.cvilaser.com/Common/PDFs/Dispersion_Equations.pdf
Sellmeier Coefficients[edit]
How are the Sellmeier coefficients determined?--TeakHoken193.187.211.118 (talk) 08:48, 18 August 2008 (UTC)
- I agree. It would help if these coefficients were explained more. Bernie Buddy (talk) 05:06, 5 October 2015 (UTC)
- They are fitted to experimental data. Usually standard non-linear least-square fitting methods are employed, with input being a value of index of refraction at about 50-100 different wavelengths, and using multiple samples, to perform simultaneous fitting. See Curve fitting for some (but not all) details. 81.6.34.246 (talk) 09:04, 7 January 2020 (UTC)
Fused Silica coefficients[edit]
I think it would be useful to add the coefficients for fused silica, however I'd first like someone to verify the numbers I have
| Coefficient | Value |
|---|---|
| B1 | 0.6961663 |
| B2 | 0.4079426 |
| B3 | 0.8974794 |
| C1 | 0.00467914825849 |
| C2 | 0.01351206307396 |
| C3 | 97.934002537921 |
With the source: http://www.rp-photonics.com/sellmeier_formula.html Matthew Rollings (talk) 18:33, 30 October 2008 (UTC)
- Looks to be correct, I found the same values at https://refractiveindex.info/?shelf=glass&book=fused_silica&page=Malitson and in the source https://doi.org/10.1364/JOSA.55.001205 (no need for full access, the abstract itself references the same values). 81.6.34.246 (talk) 09:02, 7 January 2020 (UTC)
correction to Schott TIE-29 reference (North America site, dated 2016... I don't know how to fix this)[edit]
parent site index https://www.us.schott.com/advanced_optics/english/knowledge-center/technical-articles-and-tools/tie.html?highlighted_text=TIE-29 link to pdf https://www.us.schott.com/d/advanced_optics/38cfacda-3e20-49d5-a432-d9066f56c05b/1.2/tie_29_refractive_index_and_dispersion_us.pdf — Preceding unsigned comment added by Shokutaku (talk • contribs) 19:06, 29 April 2019 (UTC)
Source of the Sellmeier equation[edit]
It is stated in the article that the relation is empirical. However, the original Sellmeier's article, as well as, "Fundamentals of Optics" by F.A. Jenkins and H. E. White lead to a conclusion that the result comes from theoretical exploration of light-matter interaction. Therefore, I propose to remove the mention of "empirical relationship". — Preceding unsigned comment added by Daniil1024 (talk • contribs) 14:25, 19 November 2020 (UTC)