Short pulse evolution in two-photon-absorbing media as a function of frequency and initial energy

K. N. Drabovich, L. M. Kocharyan

M. V. Lomonosov Moscow State University

Abstract: A numerical analysis is made of the frequency dependence of the evolution of the envelopes and energy loss of short optical pulses propagating under two-photon resonance conditions. It is established that for pulses with an initial energy situated in the range $2\pi(m+1)>\theta_0>2\pi m$, there are $m$ intervals of resonance-frequency detunings within which the pulse evolution differs qualitatively. It is shown that a quasimultistage frequency dependence of the energy loss for a fixed length of medium may serve as a test for the coherence of the resonant interaction.

UDC: 621.373.826

PACS: 42.65.Gv

Received: 19.03.1980

 English version: Soviet Journal of Quantum Electronics, 1980, 10:11, 1386–1388

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