Coherent interaction of radiation pulses with resonant multilevel media (review)

Bolshov, L. A.; Likhanskiǐ, V. V.

doi:10.1070/qe1985v015n07abeh007277

Cited by 21 publications

(9 citation statements)

References 2 publications

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“…Surprisingly, our results differ from data obtained in works [51,57] for the propagation of two optical pulses in a three-level medium with cascade transitions under stationary excitation of the upper transition. As mentioned above, at low excitation level the first pulse resonant with the lower transition is two-humped and consists of two subpulses with areas approximately equal to 2π , whereas the second pulse is one humped.…”

Section: Coupled States Of Terahertz Solitary Wavescontrasting

confidence: 99%

“…In Ref. [51], a two-humped solution has been obtained for λ 2. Furthermore, all resonant levels in our case are populated initially.…”

Section: Coupled States Of Terahertz Solitary Wavesmentioning

confidence: 99%

“…Dynamics of simultons under multiple resonance conditions was studied in [47][48][49]. According to [50,51], the simultons can be regarded as two-color breathers. Therefore, as in any completely conservative system, the collision of simultons only alters their phase.…”

Section: Introductionmentioning

confidence: 99%

“…In works [51,57] more general cases of interaction of two different frequency pulses with the three-level medium in the presence of stationary radiation resonant to the transition between the intermediate and upper levels are analyzed. It is shown, for instance, that at low illumination intensity the first pulse resonant to lower transition is a two-humped one which consists of two pulses with areas approximately equal to 2π .…”

Section: Introductionmentioning

confidence: 99%

“…It is shown, for instance, that at low illumination intensity the first pulse resonant to lower transition is a two-humped one which consists of two pulses with areas approximately equal to 2π . The transient problems associated with such propagations are reviewed in [51].…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear propagation of terahertz pulses in ammonia vapor

et al. 2014

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International audienceWe consider the propagation of terahertz (THz) pulses resonant with the lowest rotational levels in ammonia vapors at room temperature. We demonstrate a quasisimultonic regime of propagation for two-color THz pulses (their lossless simultaneous propagation with equal group velocities and stable envelopes at finite distances, like coupled solitons). The quasisimultons are formed by two pulses synchronized in time, the first one being intense and two humped with an area multiple of 4π , while the another one is weaker, one humped, and with an area much less than π. Two-and one-humped pulses have equal width and copropagate in ammonia vapor at the same group velocity. Moreover, the larger the dip of the two-hump pulse is, the weaker may be the one-humped pulse. The stability of this coupled state is provided by the fact that the two-humped pulse makes the medium transparent for the one-humped pulse. In its turn, the latter prevents the breakup of the former into separate pulses. It is established as well that a multihumped pulse with an odd or even number of humps and a hyperbolic secant pulse can behave like a simulton. In this case, the area of multihumped pulse equals to 2nπ , where n is the number of humps in the powerful pulse structure

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Section: Coupled States Of Terahertz Solitary Wavescontrasting

confidence: 99%

“…In Ref. [51], a two-humped solution has been obtained for λ 2. Furthermore, all resonant levels in our case are populated initially.…”

Section: Coupled States Of Terahertz Solitary Wavesmentioning

confidence: 99%