You are not logged in to this journal. Log in    |   Subscription Information

Phys. Rev. A 73, 053805 (2006) [8 pages]

Enhanced frequency conversion of nonadiabatic resonant pulses in coherently prepared Lambda systems

A. Eilam, A. D. Wilson-Gordon, and H. Friedmann
Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel
Received 21 December 2005; published 5 May 2006

We show that nonadiabatic, resonant amplitude- and phase-modulated pulses can be frequency converted with greater efficiency than adiabatic resonant pulses in a coherently prepared Lambda system. Indeed, conversion efficiencies close to unity, similar to those achieved using highly detuned pulses, can been obtained by using highly nonadiabatic resonant pulses. Moreover, by solving the Maxwell-Bloch equations using Fourier transforms, we derive analytical expressions for the probe and the generated four-wave mixing (FWM) pulses as a function of time and propagation distance. From these expressions, which are valid for either adiabatic or nonadiabatic pulses, we derive the result that starting from a nonadiabatic probe pulse, an asymptotically matched probe-FWM pulse pair with the same shape as the initial probe pulse is obtained. In addition, we show that, starting with a nonadiabatic matched pulse pair or a pair of matched pulse trains, we obtain propagation of these pulses without either deformation or losses.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.73.053805
DOI: 10.1103/PhysRevA.73.053805
PACS: 42.65.Ky; 42.65.Jx; 42.50.Gy
  • 42.65.Ky
    Optical frequency conversion; optical harmonic generation, including higher-order harmonic generation
  • 42.65.Jx
    Optical beam trapping, optical self-focusing and defocusing; self-phase modulation
  • 42.50.Gy
    Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption
  • YEAR: 2006
KEYWORDS: optical frequency conversion, Fourier transforms, multiwave mixing, light coherence

REFERENCES (54)

For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.

CITING ARTICLES

For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.



A new free weekly publication from APS

Physics - A new free weekly publication from APS
Please visit physics.aps.org
 
Article Tools