Analytical expression of pulse broadening in an arbitrary linear slow light medium

We derive an analytical expression for the broadening of a Gaussian input pulse in an arbitrary linear slow light medium. The expression consists of two terms, one corresponding to amplitude broadening (low-pass filtering of the pulse bandwidth) and another corresponding to phase broadening (phase dispersion around the resonance). It is shown that for a Lorentzian gain profile, the amplitude broadening is dominant at small fractional delays. However, for large fractional delays, phase broadening is inevitably dominate.


Published in:
Optics Letters, 37, 15, 3171-3173
Year:
2012
ISSN:
1539-4794
Keywords:
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 Record created 2012-07-25, last modified 2018-03-18

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