$RCWAdielectric

$RCWAdielectric required setting tag the real refractive index of the periodic material. This number needs to be set in the beginning of input file. It relates to $RCWAlamdalength and $RCWAtotallayer.

Example

$RCWAdielectric 
0       0      0   ...until the total lamda number$RCWAlamdalength
0.01    0.01   0.01
...
...
... until the total layer number $RCWAtotallayer

$RCWAsourcelength is no longer used.