scholarly journals Near-single-cycle pulses generated through post-compression on FAB1 laser at ATTOLAB-Orme facility

2021 ◽  
Vol 255 ◽  
pp. 11006
Author(s):  
Jean-François Hergott ◽  
Hugo J. B. Marroux ◽  
Rodrigo Lopez-Martens ◽  
Fabrice Réau ◽  
Fabien Lepetit ◽  
...  
Keyword(s):  
Time Resolution ◽  
High Field ◽  
High Energy ◽  
Single Cycle ◽  
Carrier Envelope Phase ◽  
Compression Stage ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Attosecond Science

Generating high-energy few-cycle pulses is key in the study of light-matter interaction in the regime of high field physics. Attosecond science possess the necessary time resolution to study the underlying fundamental processes but requires repetitions rates on the order the kilohertz and stabilization of the Carrier-Envelope Phase. We present here a post-compression stage delivering 3.8fs pulses with 2.5mJ coupled to a Ti: Sa based 1 kHz TW-class laser which can deliver 17.8fs pulses with 350mrad shot to shot CEP noise. This is the first step towards high-energy few-cycle post-compression of the FAB laser at ATTOLAB-Orme.

scholarly journals Femtosecond Single Cycle Pulses Enhanced the Efficiency of High Order Harmonic Generation

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 610
Author(s):  
Abdelmalek Taoutioui ◽  
Hicham Agueny
Keyword(s):  
Harmonic Generation ◽  
Near Infrared ◽  
High Energy ◽  
High Order ◽  
Single Cycle ◽  
High Order Harmonic Generation ◽  
Displacement Effect ◽  
High Order Harmonic ◽  
Matter Interaction ◽  
Light Matter Interaction

High-order harmonic generation is a nonlinear process that converts the gained energy during light-matter interaction into high-frequency radiation, thus resulting in the generation of coherent attosecond pulses in the XUV and soft x-ray regions. Here, we propose a control scheme for enhancing the efficiency of HHG process induced by an intense near-infrared (NIR) multi-cycle laser pulse. The scheme is based on introducing an infrared (IR) single-cycle pulse and exploiting its characteristic feature that manifests by a non-zero displacement effect to generate high-photon energy. The proposed scenario is numerically implemented on the basis of the time-dependent Schrödinger equation. In particular, we show that the combined pulses allow one to produce high-energy plateaus and that the harmonic cutoff is extended by a factor of 3 compared to the case with the NIR pulse alone. The emerged high-energy plateaus is understood as a result of a vast momentum transfer from the single-cycle field to the ionized electrons while travelling in the NIR field, thus leading to high-momentum electron recollisions. We also identify the role of the IR single-cycle field for controlling the directionality of the emitted electrons via the IR-field induced electron displacement effect. We further show that the emerged plateaus can be controlled by varying the relative carrier-envelope phase between the two pulses as well as the wavelengths. Our findings pave the way for an efficient control of light-matter interaction with the use of assisting femtosecond single-cycle fields.

CARRIER-ENVELOPE PHASE PERFORMANCE OF HOLLOW-FIBER PULSE COMPRESSION FOR HIGH-ENERGY, SINGLE-CYCLE PULSE GENERATION

2014 ◽  
Author(s):  
Tobias Witting ◽  
William A. Okell ◽  
Davide Fabris ◽  
Dane Austin ◽  
Maimouna Bacoum ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Pulse Compression ◽  
High Energy ◽  
Pulse Generation ◽  
Single Cycle ◽  
Carrier Envelope Phase ◽  
Cycle Pulse

scholarly journals Controlling photoionization using attosecond time-slit interferences

2020 ◽  
Vol 117 (20) ◽  
pp. 10727-10732
Author(s):  
Yu-Chen Cheng ◽  
Sara Mikaelsson ◽  
Saikat Nandi ◽  
Lisa Rämisch ◽  
Chen Guo ◽  
...  
Keyword(s):  
Photoelectric Effect ◽  
High Energy ◽  
Quantum Systems ◽  
Optical Pulses ◽  
Energy Quantization ◽  
Parity Conservation ◽  
Small Quantum ◽  
Matter Interaction ◽  
Attosecond Pulses ◽  
Light Matter Interaction

When small quantum systems, atoms or molecules, absorb a high-energy photon, electrons are emitted with a well-defined energy and a highly symmetric angular distribution, ruled by energy quantization and parity conservation. These rules are based on approximations and symmetries which may break down when atoms are exposed to ultrashort and intense optical pulses. This raises the question of their universality for the simplest case of the photoelectric effect. Here we investigate photoionization of helium by a sequence of attosecond pulses in the presence of a weak infrared laser field. We continuously control the energy of the photoelectrons and introduce an asymmetry in their emission direction, at variance with the idealized rules mentioned above. This control, made possible by the extreme temporal confinement of the light–matter interaction, opens a road in attosecond science, namely, the manipulation of ultrafast processes with a tailored sequence of attosecond pulses.

Gating of light- matter interaction in quantum cascade lasers with 10 fs time resolution

2010 ◽  
Author(s):  
W. Parz ◽  
T. Muller ◽  
J. Darmo ◽  
K. Unterrainer ◽  
M. Austerer ◽  
...  
Keyword(s):  
Time Resolution ◽  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Cascade Lasers

scholarly journals Attosecond metrology in a continuous-beam transmission electron microscope

2020 ◽  
Vol 6 (46) ◽  
pp. eabb1393
Author(s):  
A. Ryabov ◽  
J. W. Thurner ◽  
D. Nabben ◽  
M. V. Tsarev ◽  
P. Baum
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Time Resolution ◽  
Continuous Wave ◽  
Oscillation Period ◽  
Average Brightness ◽  
Transmission Electron ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Beam Transmission

Electron microscopy can visualize the structure of complex materials with atomic and subatomic resolution, but investigations of reaction dynamics and light-matter interaction call for time resolution as well, ideally on a level below the oscillation period of light. Here, we report the use of the optical cycles of a continuous-wave laser to bunch the electron beam inside a transmission electron microscope into electron pulses that are shorter than half a cycle of light. The pulses arrive at the target at almost the full average brightness of the electron source and in synchrony to the optical cycles, providing attosecond time resolution of spectroscopic features. The necessary modifications are simple and can turn almost any electron microscope into an attosecond instrument that may be useful for visualizing the inner workings of light-matter interaction on the basis of the atoms and the cycles of light.

scholarly journals Ultrafast electron diffraction from nanophotonic waveforms via dynamical Aharonov-Bohm phases

2020 ◽  
Vol 6 (47) ◽  
pp. eabc8804
Author(s):  
K. J. Mohler ◽  
D. Ehberger ◽  
I. Gronwald ◽  
C. Lange ◽  
R. Huber ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Time Resolution ◽  
Light Cycle ◽  
Pump Probe ◽  
Electromagnetic Potentials ◽  
Electric And Magnetic Fields ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Electron Imaging ◽  
Aharonov Bohm

Electron interferometry via phase-contrast microscopy, holography, or picodiffraction can provide a direct visualization of the static electric and magnetic fields inside or around a material at subatomic precision, but understanding the electromagnetic origin of light-matter interaction requires time resolution as well. Here, we demonstrate that pump-probe electron diffraction with all-optically compressed electron pulses can capture dynamic electromagnetic potentials in a nanophotonic material with sub-light-cycle time resolution via centrosymmetry-violating Bragg spot dynamics. The origin of this effect is a sizable quantum mechanical phase shift that the electron de Broglie wave obtains from the oscillating electromagnetic potentials within less than 1 fs. Coherent electron imaging and scattering can therefore reveal the electromagnetic foundations of light-matter interaction on the level of the cycles of light.

High energy, long-pulse, electron-beam driven KrF laser in laser-matter interaction

1993 ◽  
Author(s):  
J.-E. Montagne ◽  
Th. Sarnet ◽  
G. Inglesakis ◽  
M. Autric
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Pulse Electron Beam ◽  
Pulse Electron ◽  
Matter Interaction ◽  
Krf Laser ◽  
Long Pulse

Quantum description of light–matter coupling

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Cavity Mode ◽  
Optical Field ◽  
Level System ◽  
Bloch Equations ◽  
Optical Bloch Equations ◽  
Matter Coupling ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Full Quantum ◽  
The Ideal

In this chapter we study with the tools developed in Chapter 3 the basic models that are the foundations of light–matter interaction. We start with Rabi dynamics, then consider the optical Bloch equations that add phenomenologically the lifetime of the populations. As decay and pumping are often important, we cover the Lindblad form, a correct, simple and powerful way to describe various dissipation mechanisms. Then we go to a full quantum picture, quantizing also the optical field. We first investigate the simpler coupling of bosons and then culminate with the Jaynes–Cummings model and its solution to the quantum interaction of a two-level system with a cavity mode. Finally, we investigate a broader family of models where the material excitation operators differ from the ideal limits of a Bose and a Fermi field.

scholarly journals Signatures of the Carrier Envelope Phase in Nonlinear Thomson Scattering

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 528
Author(s):  
Marcel Ruijter ◽  
Vittoria Petrillo ◽  
Thomas C. Teter ◽  
Maksim Valialshchikov ◽  
Sergey Rykovanov
Keyword(s):  
Laser Pulse ◽  
Radiation Spectrum ◽  
Thomson Scattering ◽  
High Energy ◽  
Phase Changes ◽  
High Energy Radiation ◽  
Carrier Envelope Phase ◽  
High Intensity Laser ◽  
Experimental Parameters ◽  
Intensity Laser

High-energy radiation can be generated by colliding a relativistic electron bunch with a high-intensity laser pulse—a process known as Thomson scattering. In the nonlinear regime the emitted radiation contains harmonics. For a laser pulse whose length is comparable to its wavelength, the carrier envelope phase changes the behavior of the motion of the electron and therefore the radiation spectrum. Here we show theoretically and numerically the dependency of the spectrum on the intensity of the laser and the carrier envelope phase. Additionally, we also discuss what experimental parameters are required to measure the effects for a beamed pulse.

scholarly journals Surface plasmon polariton–enhanced photoluminescence of monolayer MoS2 on suspended periodic metallic structures

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 975-982
Author(s):  
Huanhuan Su ◽  
Shan Wu ◽  
Yuhan Yang ◽  
Qing Leng ◽  
Lei Huang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Plasmonic Nanostructures ◽  
Metallic Nanoparticle ◽  
Systematic Analysis ◽  
Excitation Rate ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Plasmon Polariton ◽  
Plasmonic Effects

AbstractPlasmonic nanostructures have garnered tremendous interest in enhanced light–matter interaction because of their unique capability of extreme field confinement in nanoscale, especially beneficial for boosting the photoluminescence (PL) signals of weak light–matter interaction materials such as transition metal dichalcogenides atomic crystals. Here we report the surface plasmon polariton (SPP)-assisted PL enhancement of MoS2 monolayer via a suspended periodic metallic (SPM) structure. Without involving metallic nanoparticle–based plasmonic geometries, the SPM structure can enable more than two orders of magnitude PL enhancement. Systematic analysis unravels the underlying physics of the pronounced enhancement to two primary plasmonic effects: concentrated local field of SPP enabled excitation rate increment (45.2) as well as the quantum yield amplification (5.4 times) by the SPM nanostructure, overwhelming most of the nanoparticle-based geometries reported thus far. Our results provide a powerful way to boost two-dimensional exciton emission by plasmonic effects which may shed light on the on-chip photonic integration of 2D materials.

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