Optical constants of CRYSTRAN - Optical materials
TlBr40Cl60 - KRS6
Complex refractive index (n+ik)
Derived optical constants
Comments
TlBr40Cl60
KRS-6 has few applications. Occasionally, it is required for research purposes.
KRS-6 crystals are grown by the sealed-ampoule Stockbarger technique. Starting materials of the highest purity are selected to ensure that there are no anionic absorption bands between 2 and 16 microns and all crystals are checked for quality by using a pathlength of 120mm. Thallium salts are toxic, and KRS6 has enough solubility to require extreme caution. Careful handling with plastic gloves covered with soft cotton gloves as appropriate to delicate optics is required.
REFERENCES:
(1) Hettner and Leisegang; Optik, V3, p305, 1948
(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 KRS6 online data sheet
Data
Additional information
Properties of TlBr40Cl60 - KRS6
density:
-
value: 7180
thermal_expansion:
-
value: 5.0E-5
hardness:
-
type: Knoop
indenter_mass: 0.5
value: 293000000
melting_point:
-
value: 696
thermal_conductivity:
-
temperature: 293
value: 0.7
youngs_modulus:
-
value: 20680000000
poissons_ratio:
-
value: 0.219
solubility:
-
temperature: 293
value: 3