Section: 12 | Optical Properties of Selected Elements |
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The text in this document differs from that in the book. This is either due to space restrictions in the book, or differences in tables.
One or more tables in this document differ to those in the book. This is due to space restrictions in the book.
Summary of table differences
The table 'Refractive Index n, Extinction Coefficient k, and Normal Incidence Reflection R as a Function of Energy' has one or more different columns and 3939 more rows than appear in the book.
How to Cite this Reference
The recommended form of citation is:
John R. Rumble, ed., CRC Handbook of Chemistry and Physics, 102nd Edition (Internet Version 2021), CRC Press/Taylor & Francis, Boca Raton, FL.
If a specific table is cited, use the format: "Physical Constants of Organic Compounds," in CRC Handbook of Chemistry and Physics, 102nd Edition (Internet Version 2021), John R. Rumble, ed., CRC Press/Taylor & Francis, Boca Raton, FL.

OPTICAL PROPERTIES OF SELECTED ELEMENTS

J. H. Weaver and H. P. R. Frederikse

These tables list the index of refraction n, the extinction coefficient k, and the normal incidence reflection R (φ = 0) as a function of photon energy E, which is expressed in electron volts (eV). To convert the energy in eV to the wavelength in μm, use λ = 1.2398/E. To compute the dielectric function ε̃ = ε1 + iε2 from the complex index of refraction Ñ = n + ik, use ε1 = n2k2 and ε2 = 2nk.

The symbol E indicates the electric field vector of the incident light, which may be either parallel or perpendicular to the unit vector perpendicular to the crystal face.

The optical constants in these tables are abridged from three more extensive tabulations:

The first two of these major sources provide detailed comparisons of all optical data available in the literature at the time of the compilation. For critical applications the reader should refer to the original work. References for individual metals and semiconductors are listed at the end of the tables. Generally, tabulated values for the optical properties are accurate to better than 10%. Extrapolated or interpolated values are marked with a footnote a. For most elements the spectral range covered is from the far infrared (0.010 or 0.10 eV) to the far ultraviolet (10, 30, or 300 eV). The intervals between successive energies in the tables are chosen in such a way that the major spectral features are preserved.

Very small values of k are expressed in exponential notation, e.g., 1.23E-5 means 1.23 × 10-5.

The following table is convenient for associating the energy entries in these tables with the corresponding wavelengths.

Relation between Energy and Wavelength



λE/eV
1 mm0.00124
500 μm0.00248
100 μm0.01240
50 μm0.02480
10 μm0.12398
5 μm0.24797
1 μm1.240
700 nm1.771
600 nm2.066
500 nm2.480
400 nm3.100
300 nm4.133
200 nm6.199
100 nm12.398
50 nm24.797


Refractive Index n, Extinction Coefficient k, and Normal Incidence Reflection R as a Function of Energy



FormEnergy (eV)n k R(φ = 0)
Continued on next page...
Aluminum1
Al0.04098.595203.7010.9923
Al0.05074.997172.1990.9915
Al0.06062.852150.7990.9906
Al0.07053.790135.5000.9899
Al0.08045.784123.7340.9895
Al0.09039.651114.1020.9892
Al0.10034.464105.6000.9889
Al0.12524.96589.2500.9884
Al0.15018.57276.9600.9882
Al0.17514.27466.9300.9879
Al0.20011.73359.3700.9873
Al0.2508.58648.2350.9858
Al0.3006.75940.9600.9844
Al0.3505.43835.5990.9834
Al0.4004.45431.4850.9826
Al0.5003.07225.5810.9817
Al0.6002.27321.4030.9806
Al0.7001.77018.3280.9794
Al0.8001.44415.9550.9778

  • aInterpolated or extrapolated.


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