Refractive index data for GaSb and InSb from 2 to 20 micrometers

[johannxv]

I need to obtain refractive index vs wavelength data for the following materials:

GaSb (Gallium Antimonide)
InSb (Indium Antimonide)

For the range from 2μm up to ideally 20μm but up to 10μm would do.

Looking on the two websites I know of for sourcing such data:

http://refractiveindex.info/?shelf=main&book=GaSb&page=Aspnes
http://www.ioffe.ru/SVA/NSM/nk/A3B5/Gif/gasb.gif

But these websites only have values up to 1-2μm.

Where can I find data for larger wavelengths?

 

[soarce]

Have a look at this article http://www.researchgate.net/profile/Ali_Reshak/publication/226769627_Calculated_optical_properties_of_GaX_%28XP_As_Sb%29_under_hydrostatic_pressure/links/0912f50d0b1a322c54000000.pdf