Hi all,

    Meep's polarizabilities are specified using omega, gamma, 
delta-epsilon, sigma etc. Should the gamma be specified in units of c/a 
or 2PI*c/a?

    This doubt stems from the Johnson and Christy paper on optical 
constants for noble metals where gamma is specified as 1/tau where tau 
is the relaxation time. By this token gamma is just a frequency. But 
because it appears in an expression involving sums and products of 
angular frequencies, the question is if Meep treats gamma to be an 
angular frequency and applies the factor of 2PI internally as with 
normal angular frequencies.

Thanks
Manoj

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