KRS5(CRYSTRAN) Refractive Index

Optical constants (n, k) of KRS5(CRYSTRAN), covering 0.54 – 2.00 μm wavelength range.

Range 0.540 – 2.000 μm
Data Points 4

Optical Constants at Key Wavelengths

532 nm
n = 2.6806
k = 0.0001

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)nk
0.54002.680590.00006
1.00002.446200.00000
1.50002.407740.00000
2.00002.394980.00000

Sampled data (4 points total). Click "Download Full CSV" for complete data.

Notes

TlBr42I58
KRS5 deep IR material with a high refractive index, KRS5 is used extensively in spectroscopy for ATR prisms, windows and lenses. In conjunction with Germanium, KRS5 can also be used in athermalised IR imaging systems.

KRS-5 crystalises by the sealed-ampoule Stockbarger technique. Starting materials of the highest purity are selected to ensure that there are no anionic absorption bands between 2μm and 16μm and all crystals are checked for quality by using a pathlength of 120mm.

CAUTION: Thallium salts are considered TOXIC and should be handled with care.

REFERENCES:

(1) Rodney and Malitson J.Opt Soc.Am. V46, p 956, 1953

(2) Combes, Ballard, McCarthy: J.Opt Soc.Am. V41, p 215, 1951

(3) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0

References

Crystran Ltd. The Crystran handbook of infra-red and ultra-violet optical materials (5th edition, 2023)
See also Crystran KRS5 online data sheet

Related Materials (Specs)

4786 (NIKON i-line glass) 5165 (NIKON i-line glass) 5742 (NIKON i-line glass) 5859 (NIKON i-line glass) 7054 (NIKON i-line glass) acrylic double matching liquid

Need to measure KRS5(CRYSTRAN) thin film thickness?

Acuitik film thickness measurement systems offer sub-nanometer non-contact precision.

View ProductsContact Us