Neutral atomic jet generation by laser ablation of copper targets

Matos, Juliana Barranco de; Destro, Marcelo Geraldo; Silveira, Carlos A.B.; Rodrigues, N. A. S.

doi:10.1063/1.4892466

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The time-resolved spectroscopy results indicate that plume temperatures from ablating the bariumsalt targets are high, at around 37, 000 K. Most other groups have measured a neutral atom ablation plume temperature of 1, 000 to 10, 000 K [24,33,58], but some have measured similar temperatures as us [58,72]. Our barium-salt target could be exhibiting different plume dynamics, or the contrast may partly be explained by a difference in data analysis.…”

Section: Discussionmentioning

confidence: 76%

Isotope-Selective Laser Ablation Ion-Trap Loading of $\mathbf{^{137}\mathrm{Ba}^+}$ using a $\mathbf{\mathrm{BaCl}_2}$ Target

White,

Low,

de Sereville

et al. 2021

Preprint

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The 133 Ba + ion is a promising candidate as a high-fidelity qubit, and the 137 Ba + isotope is promising as a high-fidelity qudit (d > 2). Barium metal is very reactive, and 133 Ba + is radioactive and can only be sourced in small quantities, so the most commonly used loading method, oven heating, is less suited for barium, and is currently not possible for 133 Ba + . Pulsed laser ablation solves both of these problems by utilizing compound barium sources, while also giving some distinct advantages, such as fast loading, less displaced material, and lower heat load near the ion trap. Because of the relatively low abundances of the isotopes of interest, a two-step photoionization technique is used, which gives us the ability to selectively load isotopes. Characterization of the ablation process for our BaCl2 targets are presented, including observation of neutral and ion ablation-fluence regimes, preparation/conditioning and lifetimes of ablation spots, and plume velocity distributions. We show that using laser ablation on BaCl2 salt targets with a two-step photoionization method, we can produce and trap barium ions reliably. Further, we demonstrate that with our photoionization method, we can trap 137 Ba + with an enhanced selectivity compared to its natural abundance.

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Section: Discussionmentioning

confidence: 76%

Isotope-Selective Laser Ablation Ion-Trap Loading of $\mathbf{^{137}\mathrm{Ba}^+}$ using a $\mathbf{\mathrm{BaCl}_2}$ Target

White,

Low,

de Sereville

et al. 2021

Preprint

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show abstract

“…A clear picture of the formation of a jet by a single pulse has given us strong evidence to disqualify alternative theories for laser-induced pumping or streaming. The possibility of jet by bubble cavitation, laser ablation, or laser-induced forward transfer can be immediately eliminated because no microbubble, no cavitation, and no plume is observed (26–31). Most importantly, all these theories imply that a jet should be launched from the surface of the quartz window; in other words, the fluid near the window surface should have the highest speed.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, only one cavity is created each time at specific position; multiple cavities will require multiple beams to avoid optical misalignment between a cavity and the laser beam that creates it. It would be convenient to simply coat a quartz plate with Au film by thermal evaporation; however, due to the weak attachment to the substrate, the Au film will be quickly removed by laser ablation or laser-induced forward transfer (5, 28–31). All of the above limitations are overcome by implanting Au into a quartz plate to create a launch pad for long-lasting photoacoustic microfluidic pumps.…”

Section: Resultsmentioning

confidence: 99%

Gold-implanted plasmonic quartz plate as a launch pad for laser-driven photoacoustic microfluidic pumps

Yue

Lin

Zhang

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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Enabled initially by the development of microelectromechanical systems, current microfluidic pumps still require advanced microfabrication techniques to create a variety of fluid-driving mechanisms. Here we report a generation of micropumps that involve no moving parts and microstructures. This micropump is based on a principle of photoacoustic laser streaming and is simply made of an Au-implanted plasmonic quartz plate. Under a pulsed laser excitation, any point on the plate can generate a directional long-lasting ultrasound wave which drives the fluid via acoustic streaming. Manipulating and programming laser beams can easily create a single pump, a moving pump, and multiple pumps. The underlying pumping mechanism of photoacoustic streaming is verified by high-speed imaging of the fluid motion after a single laser pulse. As many light-absorbing materials have been identified for efficient photoacoustic generation, photoacoustic micropumps can have diversity in their implementation. These laser-driven fabrication-free micropumps open up a generation of pumping technology and opportunities for easy integration and versatile microfluidic applications.

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Isotope-selective laser ablation ion-trap loading of Ba+137 using a BaCl2 target

et al. 2022

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Neutral atomic jet generation by laser ablation of copper targets

Cited by 3 publications

References 15 publications

Isotope-Selective Laser Ablation Ion-Trap Loading of $\mathbf{^{137}\mathrm{Ba}^+}$ using a $\mathbf{\mathrm{BaCl}_2}$ Target

Isotope-Selective Laser Ablation Ion-Trap Loading of $\mathbf{^{137}\mathrm{Ba}^+}$ using a $\mathbf{\mathrm{BaCl}_2}$ Target

Gold-implanted plasmonic quartz plate as a launch pad for laser-driven photoacoustic microfluidic pumps

Isotope-selective laser ablation ion-trap loading of Ba+137 using a BaCl2 target

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