atrri(5)
NAME
atrri - AsToRia: Refractive IndexDESCRIPTION
atrri is a plain text file format for storing a list of refractive indices that vary spectrally. Each refractive index is defined by 3 double precision floating point numbers: the wavelength in nanometers at which the index is set, followed by the real part and the imaginary part of the refractive index itself. Note that the listed refractive indices should be sorted in ascending order relative to their wavelength.
Characters behind the pound sign (#) are considered comments and are therefore ignored. Empty lines, that is, lines without characters or consisting only of spaces and tabs, are simply skipped.
GRAMMAR
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<atrri> ::= <refractive-index> [ <refractive-index> ... ] <refractive-index> ::= <wavelength> <n> <kappa> <wavelength> ::= <double> # In nm <n> ::= <double> # Real part <kappa> ::= <double> # Imaginary part
EXAMPLE
# Wavelength in nm real part imaginary part
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300.000011921 1.740000010 0.469999999 310.000002384 1.741990328 0.469004273 319.999992847 1.743917465 0.468010038 329.999983311 1.745785475 0.467014253 339.999973774 1.748130083 0.465993971 349.999964237 1.750000000 0.464985400 359.999954700 1.750000000 0.463959038 369.999945164 1.750000000 0.462961257 379.999935627 1.750000000 0.461990029 389.999926090 1.750000000 0.460981935 399.999916553 1.750000000 0.459957659