Temporal differentiation and integration of few-cycle pulses by ultrathin metallic films

Пахомов, А. В.; Архипов, Р. М.; Архипов, М. В.; Rosanov, N. N.

doi:10.1364/ol.428238

Cited by 10 publications

(4 citation statements)

References 17 publications

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“…The coherent interaction of ESP with resonant media leads to the appearance of a number of new and unusual phenomena during the propagation of such pulses in resonant media. In particular, this is the possibility of integrating and differentiating the temporal form of the pulse field strength, and not their envelope [24]. The possibility of compression of single-cycle bipolar pulses in a two-level medium due to the attraction of their unipolar components propagating coherently in the self-induced transparency mode (SIT) in a resonant medium was shown in [25].…”

Section: Introductionmentioning

confidence: 99%

Peculiaritie of Polarization Waves Behavior under Excitation of an Extended Resonant Medium by Overlapping Extremely Short Light Pulses

Архипов

Rosanov

2022

Optics and Spectroscopy

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With the coherent interaction of a sequence of extremely short light pulses with a resonant medium (when the duration of the pulses and the delays between them are shorter than the relaxation times of the population difference T1 and polarization T2 of the medium), it is possible to create spatial electromagnetically induced gratings (EMIG) of polarization and population difference in the medium, as well as their ultrafast control. The dynamics of such gratings is of interest in connection with the possibility of ultrafast control over the properties of a medium at times of the order of the pulse duration and their influence on the stability of generation of extremely short pulses in a laser with a short linear cavity. In this paper, based on the numerical solution of the system of Maxwell-Bloch equations, an unusual and interesting possibility of the appearance of narrow and alternating sections in the medium is shown and studied in detail, in which harmonic polarization waves of the medium are formed, propagating in opposite directions relative to neighboring sections. This situation occurs when two extremely short attosecond pulses collide in a two-level resonant medium. Keywords: attosecond pulses, electromagnetically induced gratings, polarization waves.

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Section: Introductionmentioning

confidence: 99%

Peculiaritie of Polarization Waves Behavior under Excitation of an Extended Resonant Medium by Overlapping Extremely Short Light Pulses

Архипов

Rosanov

2022

Optics and Spectroscopy

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“…In the recent paper of Pakhomov et al [54], it was demonstrated that the propagation of few-and subcycle pulses through nanometer-thick metallic films can result in efficient temporal differentiation and integration of the pulses. Namely, under certain restrictions on the pulse spectrum and the film thickness the pulse reflected from the film has the shape of the temporal integral of the incident pulse, while the pulse transmitted through the film can have the shape of the temporal derivative of the incident pulse.…”

Section: Shaping Of Quasi-unipolar Pulsesmentioning

confidence: 99%

Half-cycle and unipolar pulses (Topical Review)

Архипов¹,

Архипов²,

Пахомов³

et al. 2022

Laser Phys. Lett.

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Unipolar pulses have a nonzero electric pulse area (integral of the electric field strength with respect of time in a given point of space). Due to unidirectional action on charges they can be an efficient tool for ultrafast control of wave packet dynamics in matter, charges acceleration and so one. In this paper, we briefly revise recent advances (including the results obtained by the authors) in optics of extremely-short unipolar half-cycle pulses.

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“…Obtaining such UPs is possible, for example, by integrating and differentiating the time form of the field strength in thin metal films [38,39]. Experimentally, rectangular UPs in the THz frequency range in the form of precursors in an electro-optical crystal were obtained quite recently [19], and the possibility of obtaining rectangular terahertz unipolar pulses by excitation of a metal film was theoretically shown [20] using femtosecond laser pulse.…”

Section: Introductionmentioning

confidence: 99%

Nonharmonic Spatial Population Difference Structures Created by Unipolar Rectangular Pulses in a Resonant Medium

Архипов

Пахомов

et al. 2022

Optics and Spectroscopy

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In the case of coherent interaction with a medium of extremely short light pulses (ESPs) having a carrier frequency and harmonic shape (when the pulse durations are shorter than the population relaxation times T1 and polarization relaxation time T2 of the medium), electromagnetically induced gratings (EMIGs) of the population difference, which have a pronounced harmonic dependence on the coordinates, may appear in it. These structures can occur when pulses do not overlap or overlap in the medium. Recently, the possibility of obtaining unipolar electromagnetic pulses in the optical and adjacent ranges of non-harmonic shape, for example, rectangular and triangular, with a duration less or comparable to the duration of the extremely-short pulse in this range, has attracted interest. In this work, using the numerical solution of the system of Maxwell-Bloch equations, we study EMIG formation by rectangular attosecond pulses in a two-level resonant medium. The possibility of inducing an EMIG of a non-harmonic shape in the form of light-induced channels microresonators, (microcavities) with a size of the order of the wavelength of the resonant transition of the medium, whose parameters can be controlled, for example, by the amplitude of the incident pulses, is shown. It has been suggested that it is possible to create an EMIG of a predetermined non-harmonic shape only in the general case of using unipolar pulses. Keywords: attosecond pulses, unipolar pulses, rectangular pulses, electromagnetically induced gratings, polarization waves, light-induced microresonators.

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Temporal differentiation and integration of few-cycle pulses by ultrathin metallic films

Cited by 10 publications

References 17 publications

Peculiaritie of Polarization Waves Behavior under Excitation of an Extended Resonant Medium by Overlapping Extremely Short Light Pulses

Peculiaritie of Polarization Waves Behavior under Excitation of an Extended Resonant Medium by Overlapping Extremely Short Light Pulses

Half-cycle and unipolar pulses (Topical Review)

Nonharmonic Spatial Population Difference Structures Created by Unipolar Rectangular Pulses in a Resonant Medium

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