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Carrier envelope phase (CEP) stabilized 5 fs and 22 fs pulses of intense 800 nm light are used to probe the strong-field ionization dynamics of multielectron entities, xenon and carbon disulfide. We compare ion yields obtained with and…

原子物理 · 物理学 2015-06-12 D. Mathur , K. Dota , A. K. Dharmadhikari , J. A. Dharmadhikari

We studied dependence of dissociative ionization in H2 on carrier-envelope phase (CEP) of few-cycle (6fs) near-infrared (NIR) laser pulses. For low-energy channels, we present the first experimental observation of CEP dependence for total…

化学物理 · 物理学 2015-06-12 Han Xu , J - P Maclean , D E Laban , W C Wallace , D Kielpinski , R T Sang , I V Litvinyuk

We present a joint experimental-theoretical study on the effect of the carrier-envelope phase (CEP) of a few-cycle pulse on the atomic excitation process. We focus on the excitation rates of argon as a function of CEP in the intensity range…

The impact of the carrier-envelope phase (CEP) of an intense multi-cycle laser pulse on the radiation of an electron beam during nonlinear Compton scattering is investigated. An interaction regime of the electron beam counterpropagating to…

等离子体物理 · 物理学 2018-03-28 Jian-Xing Li , Yue-Yue Chen , Karen Z. Hatsagortsyan , Christoph H. Keitel

We investigate, from a theoretical perspective, photo-emission of electrons induced by ultra-short infrared pulses covering only a few photon cycles. In particular, we investigate the impact of the Carrier-Envelope Phase (CEP) of the laser…

原子与分子团簇 · 物理学 2018-01-17 Paul-Gerhard Reinhard , Eric Suraud , Chris Meier

In strong laser fields, sub-femtosecond control of chemical reactions with the carrier-envelope phase (CEP) becomes feasible. We have studied the control of reaction dynamics of acetylene and allene in intense few-cycle laser pulses at 750…

Driving laser wakefield acceleration with extremely short, near single-cycle laser pulses is crucial to the realisation of an electron source that can operate at kHz-repetition rate while relying on modest laser energy. It is also…

等离子体物理 · 物理学 2021-04-14 Julius Huijts , Igor Andriyash , Lucas Rovige , Aline Vernier , Jerome Faure

We perform theoretical investigations of laser-induced nonsequential double ionization with few cycle pulses, with particular emphasis on the dependence of the electron-momentum distributions on the carrier-envelope phase. We focus on the…

原子物理 · 物理学 2015-06-05 C. Figueira de Morisson Faria , T. Shaaran , M. T. Nygren

Above-threshold ionization spectra from cesium are measured as a function of the carrier-envelope phase (CEP) using laser pulses centered at 3.1 $\mu$m wavelength. The directional asymmetry in the energy spectra of backscattered electrons…

To date, investigations of carrier-envelope-phase (CEP) dependent effects have been limited to optical pulses with few cycles and high intensity, and have not been reported for other types of pulses. Optomechanical systems are shown to have…

We investigate the carrier-envelope phase and intensity dependence of the longitudinal momentum distribution of photoelectrons resulting from above-threshold ionization of argon by few-cycle laser pulses. The intensity of the pulses with a…

原子物理 · 物理学 2018-07-04 M. Kübel , M. Arbeiter , C. Burger , Nora G. Kling , T. Pischke , R. Moshammer , T. Fennel , M. F. Kling , B. Bergues

Measurements and calculations of the absolute carrier-envelope phase (CEP) effects in the photodissociation of the simplest molecule, H2+, with a 4.5-fs Ti:Sapphire laser pulse at intensities up to (4 +- 2)x10^14 Watt/cm^2 are presented.…

化学物理 · 物理学 2013-09-23 T. Rathje , A. M. Sayler , S. Zeng , P. Wustelt , H. Figger , B. D. Esry , G. G. Paulus

In few-cycle pulses, the exact value of the carrier-envelope phase difference (CEPD) has a pronounced influence on the ionization dynamics of atoms and molecules. We show that for atoms in circularly polarized light, a change in the CEPD is…

原子物理 · 物理学 2009-11-13 Christian Per Juul Martiny , Lars Bojer Madsen

We have investigated the ionization of the H atom by intense few-cycle laser pulses, in particular the intra-pulse interference effects, and their dependence on the carrier-envelope phase (CEP) of the laser pulse. In the final momentum…

原子物理 · 物理学 2015-06-22 A. Tóth , S. Borbély , K. Tőkési , L. Nagy

We propose a scheme to generate carrier-envelope-phase (CEP) stabilized few-cycle optical pulses from a free-electron laser oscillator. The CEP stabilization is realized by continuous injection of CEP-stabilized seed pulses from an external…

加速器物理 · 物理学 2017-11-22 Ryoichi Hajima , Ryoji Nagai

The impacts of the carrier-envelope phase (CEP) of a long relativistic tightly-focused laser pulse on the dynamics of a counter-propagating electron beam have been investigated in the, so-called, electron reflection regime, requiring the…

We study the impact of two-color ($\omega$ and $2\omega$) co- and counter-rotating ultrashort attosecond laser pulses on non-isotropic atomic targets through the one- and two-photon interference pattern of the photoelectron spectrum.…

原子物理 · 物理学 2026-05-08 Juan J. Omiste , Lars Bojer Madsen

We investigate numerically with Hylleraas coordinates the frequency dependence of the carrier-envelope phase (CEP) effect on bound-bound transitions of helium induced by an ultrashort laser pulse of few cycles. We find that the CEP effect…

原子物理 · 物理学 2013-01-07 Dian Peng , Biao Wu , Panming Fu , Bingbing Wang , Jiangbin Gong , Zong-Chao Yan

Intense, ultrashort pulses of 800 nm laser light (12 fs, $\sim$4 optical cycles) of peak intensity 5$\times$10$^{14}$ W cm$^{-2}$ have been used to irradiate gas-phase Xe$_n$ clusters ($n$=500-25,000) so as to induce multiple ionization and…

原子与分子团簇 · 物理学 2015-05-19 D. Mathur , F. A. Rajgara

We investigated the carrier-envelope phase (CEP) stability of a hollow-fiber setup used for high-energy, few-cycle pulse generation. Saturation of the output pulse energy is observed at 0.6 mJ for a 260 um inner-diameter, 1 m long fiber,…

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