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[Licence| Download | New Version Template] ackd_v1_0.gz(9 Kbytes)
Manuscript Title: Kramers - Kronig analysis of reflection data.
Authors: R. Klucker, U. Nielsen
Program title: KRKRAN
Catalogue identifier: ACKD_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 6(1973)187
Programming language: Fortran.
Computer: IBM 360/75.
Operating system: OS MVT / RELEASE 21.6.
RAM: 64K words
Word size: 8
Keywords: Dispersion-relation, Kramers kronig integral, Reflectance, Optical constants, Dielectric constants, Optics.
Classification: 18.

Nature of problem:
Optical and dielectric constants of insulators and semiconductors are calculated from reflectance spectra using the Kramers-Kronig-dispersion relation.

This program computes optical and dielectric constants only from reflectance spectra which are obtained with polarized light, the electrical field vector of which is lying either perpencidular or parallel to the plane of incidence. For the integration only the linear term of the expansion of Re f(omega) is used. But according to the long write-up this program may easily be modified if higher approximations are desired.

Unusual features:
This program is especially suited to accept data in the form of punched cards from a card punching machine (IBM 024). The original curves are converted by means of a X-Y- recorder with retransmitting slidewire potentiometers and an analog-digital converter connected to this punching machine.

Running time:
Typical running time is about 50 s on the IBM 360/75 for one set of data and an output of 6000 lines printed.