Consider the Lorentz-type index of refraction The damping constant T > 0 and is called the

Consider the Lorentz-type index of refraction

The damping constant" T > 0 and ƒ is called the oscillator strength. Assume |ƒ|

(a) Produce an argument based on monochromatic plane wave propagation that ƒ > 0 describes an absorbing medium (like a conventional dielectric) which extracts energy from the field while ƒ (b) A wave packet propagates a distance L_A through an absorbing medium with ƒ_A > 0 immediately after it propagates a distance L_G through a gain medium with ƒ_G

Transcribed Image Text:

n²(w) = 1 + fw P ww² - iwl