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We describe a efficient way to photoionize strontium atoms in a linear radio-frequency trap. We use a 2-photon second order process to excite the autoionization resonance (4d2 + 5p2) 1D2. A doubled pulsed Ti:Saphire laser system is used at…

Quantum Physics · Physics 2007-12-04 E. Kirilov , S. Putterman

For several decades, ions have been trapped by radio frequency (RF) and neutral particles by optical fields. We implement the experimental proof-of-principle for trapping an ion in an optical dipole trap. While loading, initialization and…

Quantum Physics · Physics 2015-05-18 Ch. Schneider , M. Enderlein , T. Huber , T. Schaetz

We demonstrate broadband laser cooling of atomic ions in an rf trap using ultrafast pulses from a modelocked laser. The temperature of a single ion is measured by observing the size of a time-averaged image of the ion in the known harmonic…

Quantum Physics · Physics 2009-11-11 B. B. Blinov , R. N. Kohn , M. J. Madsen , P. Maunz , D. L. Moehring , C. Monroe

This paper demonstrates the usefulness of pulsed laser ablation in liquids as a fast screening synthesis method able to prepare even complex compositions at the nanoscale. Nanoparticles of Y2O3:Eu3+, Lu2O2S: Eu3+, Gd2SiO5:Ce3+ and…

Materials Science · Physics 2009-10-08 Gilles Ledoux , David Amans , Christophe Dujardin , Karine Masenelli-Varlot

The ecologically best way to produce nanoparticles (NP) is based on laser ablation in liquid (LAL). In the considered here case the LAL means that a gold target is irradiated through transparent water. During and after irradiation the…

Computational Physics · Physics 2019-09-04 Yu. V. Petrov , N. A. Inogamov , V. V. Zhakhovsky , V. A. Khokhlov

We investigated various types of commercial silica irradiated with a pulsed Nd:YAG laser radiation (4.66 eV), with exposure time ranging up to 10000 s. Transient E' centers were probed in situ by measuring the amplitude of the optical…

Materials Science · Physics 2016-08-31 M. Cannas , F. Messina

Laser-assisted stripping is a novel approach to H- charge exchange that overcomes long-standing limitations associated with the traditional, foil-based method of producing high-intensity, time-structured beams of protons. This paper reports…

Laser ablation in liquids enables the synthesis of surfactant-free nanoparticles but remains limited in productivity due to intrinsic constraints imposed by the liquid environment. These constraints include nonlinear optical losses,…

A femtosecond laser is a powerful tool for micromachining of silicon. In this work, large-area laser ablation of crystalline silicon is comprehensively studied using a laser source of pulse width 300 fs at two wavelengths of 343 nm and 1030…

We quantify the dependence of the single-shot ablation threshold on the angle of incidence and polarization of a femtosecond laser beam, for three dissimilar solid-state materials: a metal, a dielectric and a semiconductor. Using the…

Optics · Physics 2016-11-23 Xiao-Long Liu , Weibo Cheng , Massimo Petrarca , Pavel Polynkin

The resources needed for Particle in Cell simulations of Laser Wakefield Acceleration can be greatly reduced in many cases of interest using an envelope model. However, the inclusion of tunneling ionization in this time averaged treatment…

Plasma Physics · Physics 2022-04-28 Francesco Massimo , Arnaud Beck , Julien Dérouillat , Imen Zemzemi , Arnd Specka

We present a novel ion trap fabrication method enabling the realization of multilayer ion traps scalable to an in principle arbitrary number of metal-dielectric levels. We benchmark our method by fabricating a multilayer ion trap with…

The optical response of nickel is studied in a wide range of laser fluence, below and above the ablation threshold, by selfreflectivity measurements of ultrashort 800nm single laser pulses. At the ablation threshold, the reflectivity…

Optics · Physics 2021-11-04 T Genieys , M Petrakakis , G Tsibidis , M Sentis , O Utéza

Laser-induced nuclear recollisions following $\alpha$ decay in the presence of an intense laser field are investigated theoretically. We show that while an intense optical laser does not influence notably the tunneling rate in $\alpha$…

We use a 1030 nm laser with 7 ps pulse duration and average power up to 100 W to ablate pyramid-shape subwavelength structures (SWS) on alumina and sapphire. The SWS give an effective and cryogenically robust anti-reflection coating in the…

Applied Physics · Physics 2021-05-18 Qi Wen , Elena Fadeeva , Shaul Hanany , Jürgen Koch , Tomotake Matsumura , Ryota Takaku , Karl Young

Laser-induced lift-off of functional surface layers is a key process in micro- and nano-fabrication; however, optimization criteria for maximizing the lifted-off area remain insufficiently defined. In analogy to the well-established theory…

Optics · Physics 2026-05-01 Andrius Žemaitis , Paulius Gečys , Mindaugas Gedvilas

We describe a 88Sr+ ion trap apparatus with the capability to produce high-quality 408 nm photons aimed at distributed quantum computing and networking applications. This instrument confines ion chains using a surface electrode trap with a…

We show that light-induced atom desorption (LIAD) can be used as a flexible atomic source for large Rb-87 and K-40 magneto-optical traps. The use of LIAD at short wavelengths allows for fast switching of the desired vapor pressure and…

Other Condensed Matter · Physics 2007-05-23 C. Klempt , T. van Zoest , T. Henninger , O. Topic , E. Rasel , W. Ertmer , J. Arlt

A novel approach to optics integration in ion traps is demonstrated based on a surface electrode ion trap that is microfabricated on top of a dielectric mirror. Additional optical losses due to fabrication are found to be as low as 80 ppm…

Quantum Physics · Physics 2011-08-23 Peter F. Herskind , Shannon X. Wang , Molu Shi , Yufei Ge , Marko Cetina , Isaac L. Chuang

We present a novel laser based ion acceleration scheme, where a petawatt circularly polarized laser pulse is shot on an ultra-thin (nano-scale) double-layer target. Our scheme allows the production of high-quality light ion beams with both…

Plasma Physics · Physics 2013-09-06 M. Grech , S. Skupin , R. Nuter , L. Gremillet , E. Lefebvre
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