List of refractive indicesFrom Wikipedia, the free encyclopedia

Many materials have a well-characterized refractive index, but these indices depend strongly upon thefrequency of light. Standard refractive index measurements are taken at yellow doublet sodium D line, with awavelength of 589 nanometres.

There are also weaker dependencies on temperature, pressure/stress, et cetera, as well on precise materialcompositions (presence of dopants et cetera); for many materials and typical conditions, however, thesevariations are at the percent level or less. Thus, it is especially important to cite the source for an indexmeasurement if precision is required.

In general, an index of refraction is a complex number with both a real and imaginary part, where the latterindicates the strength of absorption loss at a particular wavelength—thus, the imaginary part is sometimes calledthe extinction coefficient . Such losses become particularly significant, for example, in metals at short (e.g.visible) wavelengths, and must be included in any description of the refractive index.

Refraction, critical angle and total internal reflection of light at the interface between two media.

Contents

1 List2 See also3 References4 External links

List

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Some representative refractive indicesMaterial λ (nm) n Ref.

Vacuum 1 (by definition)Air at STP 1.000277

Gases at 0 °C and 1 atm

Air 589.29 1.000293 [1]

Carbon dioxide 589.29 1.00045

[2]

[3] [4]

Helium 589.29 1.000036 [1]

Hydrogen 589.29 1.000132 [1]

Liquids at 20 °C

Arsenic trisulfide and sulfur in methylene iodide 1.9 [5]

Benzene 589.29 1.501 [1]

Carbon disulfide 589.29 1.628 [1]

Carbon tetrachloride 589.29 1.461 [1]

Ethyl alcohol (ethanol) 589.29 1.361 [1]

Silicone oil 1.336-1.582 [6]

Water 589.29 1.3330 [1]

10% Glucose solution in water 589.29 1.3477 [7]

20% Glucose solution in water 589.29 1.3635 [7]

60% Glucose solution in water 589.29 1.4394 [7]

Solids at room temperature

Titanium dioxide (Rutile phase ) 589.29 2.496 [8]

Diamond 589.29 2.419 [1]

Strontium titanate 589.29 2.41

Amber 589.29 1.55 [1]

Fused silica (also called Fused Quartz) 589.29 1.458 [1]

Sodium chloride 589.29 1.544 [9]

Other materialsLiquid helium 1.025Water ice 1.31

Cornea (human) 1.373/1.380/1.401 [10]

Lens (human) 1.386 - 1.406

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Material λ (nm) n Ref.Acetone 1.36Ethanol 1.36Glycerol 1.4729Bromine 1.661

Teflon AF 1.315 [11]

Teflon 1.35 - 1.38

Cytop 1.34 [12]

Sylgard 184 (Polydimethylsiloxane) 1.4118 [13]

PLA 1.46 [14]

Acrylic glass 1.490 - 1.492Polycarbonate 1.584 - 1.586PMMA 1.4893 - 1.4899PETg 1.57PET 1.5750Crown glass (pure) 1.50 - 1.54Flint glass (pure) 1.60 - 1.62Crown glass (impure) 1.485 - 1.755Flint glass (impure) 1.523 - 1.925

Pyrex (a borosilicate glass) 1.470 [15]

Cryolite 1.338Rock salt 1.516Sapphire 1.762–1.778

Sugar Solution, 25% 1.3723 [16]

Sugar Solution, 50% 1.4200 [16]

Sugar Solution, 75% 1.4774 [16]

Cubic zirconia 2.15 - 2.18Potassium Niobate (KNbO3) 2.28Silicon carbide 2.65 - 2.69Cinnabar (Mercury sulfide) 3.02Gallium(III) phosphide 3.5Gallium(III) arsenide 3.927Zinc Oxide 390 2.4Germanium 4.01

Silicon 590 3.96 [17]

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See also

Sellmeier equationCorrective lens#Ophthalmic material property tablesOptical properties of water and ice

References

^ a b c d e f g h i j k Optics, Fourth Edition. Pearson Higher Education. 18 March 2003. ISBN 978-0-321-18878-6.|coauthors= requires |author= (help)

1.

^ Introduction to Geometrical and Physical Optics. McGraw-Hill Book Company, INC. 1953.2.^ Handbook of Chemistry and Physics. Chemical Rubber Publishing Co. 1957. |coauthors= requires |author=(help)

3.

^ Introduction to Optics, Third Edition. Pearson Prentice Hall. 2007. p. 221. ISBN 0-13-149933-5. |coauthors=requires |author= (help)

4.

^ Meyrowitz, R, A compilation and classification of immersion media of high index of refraction, AmericanMineralogist 40: 398 (1955) (http://www.minsocam.org/ammin/AM40/AM40_398.pdf)

5.

^ Silicone Fluids: Stable and Inert Material (http://www.gelest.com/goods/pdf/siliconefluids.pdf)6.^ a b c David R. Lide (2001). CRC handbook of physics and chemistry. The Chemical Rubber Company,Cleveland, OH. ISBN 0-8493-0482-2.

7.

^ RefractiveIndex.INFO - Refractive index and related constants (http://refractiveindex.info/?group=CRYSTALS&material=TiO2)

8.

^ College Physics, 6th Edition. Brooks/Cole. 2003. p. 692. ISBN 978-0-03-035114-3. |coauthors= requires|author= (help)

9.

^ "Refractive index of the human corneal epithelium and stroma". J Refract Surg. 11 (2): 100–105. 1995 Mar-Apr.PMID 7634138 (//www.ncbi.nlm.nih.gov/pubmed/7634138). |coauthors= requires |author= (help)

10.

^ "Teflon AF" (http://www2.dupont.com/Teflon_Industrial/en_US/products/product_by_name/teflon_af/properties.html). Retrieved 2010-10-14.

11.

^ "Cytop" (http://www.agcce.eu.com/CYTOP/TechInfo.asp). Retrieved 2010-10-14.12.^ "184 Silicone Elastomer" (http://www1.dowcorning.com/DataFiles/090007c8803bb6a1.pdf) (PDF) (ProductInformation). Dow Corning. Retrieved 2012-12-11.

13.

^ "Poly(Lactic Acid): Synthesis, Structures, Properties, Processing, and Applications; Chapter 8: OpticalProperties" (http://onlinelibrary.wiley.com/doi/10.1002/9780470649848.ch8). Retrieved 2012-10-25.

14.

^ University of Liverpool. "Absolute Refractive Index" (http://www.matter.org.uk/schools/Content/Refraction/absolute.html). Retrieved 2007-10-18.

15.

^ a b c "Manual for Sugar solution Prism" (http://www.frederiksen.eu/fileadmin/user_upload/PDF/Export_Manuals/545920_AE_sugarsolution.pdf). Retrieved 2012-03-21.

16.

^ "Optical Properties of Silicon" (http://pvcdrom.pveducation.org/APPEND/OPTICAL.HTM). Retrieved2009-05-31.

17.

External links

International Association for the Properties of Water and Steam (http://www.iapws.org/relguide/rindex.pdf)Ioffe institute, Russian Federation (http://www.ioffe.ru/SVA/NSM/nk/index.html)Crystran, United Kingdom (http://www.crystran.co.uk/)Jena University, Germany (http://www.astro.uni-jena.de/Laboratory/Database/jpdoc/f-dbase.html)Hyperphysics list of refractive indices (http://hyperphysics.phy-astr.gsu.edu/hbase/tables/indrf.html#c1)Luxpop: Index of refraction values and photonics calculations (http://www.luxpop.com/)Kaye and Laby Online (http://www.kayelaby.npl.co.uk/general_physics/2_5/2_5_8.html) Provided by theNational Physical Laboratory, UK

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List of Refractive Indices of Solvents (http://macro.lsu.edu/HowTo/solvents/Refractive%20Index.htm)

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