Femtosecond Field‐Driven On‐Chip Unidirectional Electronic Currents in Nonadiabatic Tunneling Regime

Shi, Liping; Babushkin, Ihar; Husakou, Anton; Melchert, Oliver; Frank, Bettina; Yi, Jun; Wetzel, Gustav; Demircan, Ayhan; Lienau, Christoph; Gießen, Harald; Ivanov, Misha; Morgner, Uwe; Kovačev, Milutin

doi:10.1002/lpor.202000475

Cited by 15 publications

(13 citation statements)

References 43 publications

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“…В работе рассмотрена задача о возбуждении частицы в одномерной прямоугольной потенциальной яме, в которой имеется один уровень энергии, с помощью ПКИ аттосекундной длительности, которая меньше времени, связанного с энергией связанного состояния, τ p < T g . Такая модель прямоугольной ямы с одним уровнем энергии может описывать наноструктуры, наночастицы с неглубокими потенциальными ямами [36][37][38], а также используется в ядерной физике, например, для описания дейтрона [34].…”

Section: заключениеunclassified

Особенности Возбуждения Частицы В Одноуровневой Квантовой Яме Предельно Коротким Аттосекундным Импульсом

Архипов¹,

Архипов²,

Белов³

et al. 2023

Оптика И Спектроскопия

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Using the solution of the time Schrödinger equation, the features of the excitation of a bound state of a particle in a one-dimensional rectangular quantum well of small depth by an extremely short light pulse are studied. The case of a shallow well with only one energy level is considered. In this case, the system is excited by an attosecond pulse whose duration is shorter than the characteristic time associated with the energy of the bound state of the particle in the well. It is shown that in this case the population of the bound state and the ionization probability are determined by the ratio of the electric area of the pulse to its atomic measure, which is inversely proportional to the well width. The calculation results showed that unipolar subcycle pulses with nonzero electric area can excite the system faster and more efficiently than bipolar pulses with zero area. The possibility of using unipolar gamma-ray pulses of zeptosecond duration for deuteron excitation is discussed, and numerical estimates of the required duration and electric area of the pulse are given.

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Section: заключениеunclassified

Особенности Возбуждения Частицы В Одноуровневой Квантовой Яме Предельно Коротким Аттосекундным Импульсом

Архипов¹,

Архипов²,

Белов³

et al. 2023

Оптика И Спектроскопия

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“…Let us consider a medium model, which we describe as a one-dimensional potential well with absolutely rigid walls. Such a model, although being the simplest, however is used in physics, for example, in description of metal nanoparticles and semiconductor nanostructures [9,[32][33][34][35].…”

Section: Creating Emig and Control Of Bound States Population In A Re...mentioning

confidence: 99%

“…These pulses are actively used to study the dynamics of wave packets in atoms, molecules and solid bodies [2][3][4][5]. Recently the interaction of ultra short pulses with different nanostructures [6,7], in particular, with metal nanostructures [8,9], is actively investigated. The interest in recent studies is related to the possibility to convert ultrafast optical signals into low-frequency signals due to creation of the electron current under the interaction of the initial pulse with a nanoparticle.…”

Section: Introductionmentioning

confidence: 99%

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Coherent control and creation of population gratings for a pair of attosecond pulses in a resonant medium based on one-dimensional rectangular quantum wells

Архипов

Belov

Архипов

et al. 2022

Optics and Spectroscopy

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Attosecond pulses can be used to create and control coherence in resonant media, since their duration is shorter than the population relaxation times T1 and medium polarization T2. Previously, the possibility of creating and ultrafast control of electromagnetically induced gratings (EMIG) of atomic populations in a resonant medium was shown using a sequence of extremely short light pulses, when the pulses coherently interact with the medium and do not simultaneously overlap in the medium. These studies were carried out in various approximations, when a finite number of energy levels of the medium is taken into account, or when the pulse amplitude is small. In this paper, based on a direct numerical solution of the time dependent Schredinger equation without the indicated approximations, we study the possibility of ultrafast coherent control of populations and the creation of an EMIG by a pair of attosecond pulses in a multilevel resonant medium with a low density of particles. The medium is modeled using a one-dimensional rectangular potential well with infinitely high walls. The studies performed show the possibility of ultrafast coherent control of the properties of resonant media based on quantum wells using attosecond pulses. Keywords: electromagnetically induced gratings, coherent interaction, extremely short pulses, unipolar pulses, attosecond pulses, medium coherence.

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“…A number of contemporary experiments in atomic and molecular physics − and also nano-optics , are conducted in the intensity range between these two extremes. However, systematic experimental research highlighting the nature of this transition itself is missing.…”

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confidence: 99%

Nonadiabatic Nano-optical Tunneling of Photoelectrons in Plasmonic Near-Fields

et al. 2022

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Nonadiabatic nano-optical electron tunneling in the transition region between multiphoton-induced emission and adiabatic tunnel emission is explored in the near-field of plasmonic nanostructures. For Keldysh γ values between ∼1.3 and ∼2.2, measured photoemission spectra show strong-field recollision driven by the nanoscale near-field. At the same time, the photoemission yield shows an intensity scaling with a constant nonlinearity, which is characteristic for multiphoton-induced emission. Our observations in this transition region were well reproduced with the numerical solution of Schrödinger’s equation, mimicking the nanoscale geometry of the field. This way, we determined the boundaries and nature of nonadiabatic tunneling photoemission, building on a key advantage of a nanoplasmonic system, namely, that high-field-driven recollision events and their signature in the photoemission spectrum can be observed more efficiently due to significant nanoplasmonic field enhancement factors.

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Femtosecond Field‐Driven On‐Chip Unidirectional Electronic Currents in Nonadiabatic Tunneling Regime

Cited by 15 publications

References 43 publications

Особенности Возбуждения Частицы В Одноуровневой Квантовой Яме Предельно Коротким Аттосекундным Импульсом

Особенности Возбуждения Частицы В Одноуровневой Квантовой Яме Предельно Коротким Аттосекундным Импульсом

Coherent control and creation of population gratings for a pair of attosecond pulses in a resonant medium based on one-dimensional rectangular quantum wells

Nonadiabatic Nano-optical Tunneling of Photoelectrons in Plasmonic Near-Fields

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