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In this work, we present a planar laser-induced fluorescence (PLIF) system for two-dimensional (2D) spatial and phase-resolved ion velocity distribution function (IVDF) measurements. A continuous-wave tunable diode laser produces a laser…

Plasma Physics · Physics 2025-04-04 Sung Hyun Son , Ivan Romadanov , Nirbhav Singh Chopra , Yevgeny Raitses

The plasma-based acceleration is an encouraging technique to overcome the limits of the accelerating gradient in the conventional RF acceleration. A plasma accelerator is able to provide accelerating fields up to hundreds of $GeV/m$, paving…

We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne…

Thin planar pixel modules are promising candidates to instrument the inner layers of the new ATLAS pixel detector for HL-LHC, thanks to the reduced contribution to the material budget and their high charge collection efficiency after…

Instrumentation and Detectors · Physics 2016-09-21 Anna Macchiolo , Richard Nisius , Natascha Savic , Stefano Terzo

Nonlinear interferometers with correlated photons hold a promise to advance optical characterization and metrology techniques by improving their performance and affordability. Nonlinear interferometers offer the sub-shot noise phase…

Quantum Physics · Physics 2020-05-13 Anna V. Paterova , Leonid A. Krivitsky

Narrow-linewidth lasers have high spectral purity, long coherent length and low phase noise, so they have important applications in cold atom physics, quantum communication, quantum information processing and optical precision measurement.…

Optics · Physics 2023-08-21 Lili Hao , Rui Chang , Xiaokai Hou , Jun He , Junmin Wang

The advancement of millimeter wave and terahertz technologies have revolutionized high speed wireless networks and precise tracking systems. These technologies offer unique penetration capabilities in specific scenarios, significantly…

Plasma Physics · Physics 2023-11-15 Wenbo Liu , Peian Li , Guohao Liu , Jianjun Ma , Houjun Sun

Long ground-Rydberg coherence lifetime is interesting for implementing high-fidelity quantum logic gates, many-body physics, and other quantum information protocols. However, the potential well formed by a conventional far-off-resonance…

Optics · Physics 2023-01-23 Xiaokai Hou , Shou Liu , Xin Wang , Feifei Lu , Jun He , Junmin Wang

Time-resolved terahertz spectroscopy is used to investigate formation and ultrafast long-distance propagation of electron-hole plasma in strongly photoexcited GaAs and InP. The observed phenomena involve fundamental interactions of…

Materials Science · Physics 2024-10-23 T. Troha , F. Klimovič , T. Ostatnický , H. Němec , P. Kužel

The Plasma Liner Experiment (PLX) at Los Alamos National Laboratory (LANL) is a platform that seeks to achieve fusion via the Plasma-Jet-Driven Magneto-Inertial Fusion (PJMIF) concept. The experiment utilizes a constellation of plasma guns…

Plasma Physics · Physics 2025-12-18 E. C. Hansen , P. Farmakis , D. Michta , C. Ren , H. Wen , S. Langendorf , F. Chu , P. Tzeferacos

We observe shock-front separation and species-dependent shock widths in multi-ion-species collisional plasma shocks, which are produced by obliquely merging plasma jets of a He/Ar mixture (97% He and 3% Ar by initial number density) on the…

Plasma Physics · Physics 2020-04-03 Tom Byvank , Samuel J. Langendorf , Carsten Thoma , Scott C. Hsu

We present a novel method for aligning a laser ionized plasma source to a pair of ultra-relativistic electron beams that comprise a plasma wakefield accelerator (PWFA). We achieve alignment by analyzing the plasma afterglow light observed…

Longitudinal ion acceleration from high-intensity (I ~ 10^20 Wcm^-2) laser interactions with helium gas jet targets (n_e ~ 0.04 n_c) have been observed. The ion beam has a maximum energy for He^2+ of approximately 40 MeV and was directional…

We report a novel experimental technique for the comparison of ionization processes in ultrafast laser pulses irrespective of pulse ellipticity. Multiple ionization of xenon by 50 fs 790 nm, linearly and circularly polarized laser pulses is…

We demonstrate a hard x-ray probe of laser-aligned small molecules. To align small molecules with optical lasers, high intensities at nonresonant wavelengths are necessary. We use 95 ps pulses focused to 40 mum from an 800 nm Ti:sapphire…

By reentering into laser interferometers, scattered or stray light introduces non-linear noise. This is a major limitation of precision interferometers as preventing such parasitic light is nearly impossible. Thus, substantial effort is put…

Optics · Physics 2025-12-16 Daniel Voigt , Oliver Gerberding

Rich soft X-ray emission lines of highly charged silicon ions (Si VI--Si XII) were observed by irradiating an ultra-intense laser pulse with width of 200 fs and energy of $\sim$90 mJ on the solid silicon target. The high resolution spectra…

Astrophysics · Physics 2009-11-13 G. Y. Liang , G. Zhao , J. Y. Zhong , Y. T. Li , Y. Q. Liu , Q. L. Dong , X. H. Yuan , Z. Jin , J. Zhang

In the last few years, integrated optics (IO) beam combiners have facilitated the emergence of 4-telescope interferometers such as PIONIER or GRAVITY, boosting the imaging capabilities of the VLTI. However, the spectral range beyond…

Instrumentation and Methods for Astrophysics · Physics 2017-06-14 Jan Tepper , Lucas Labadie , Romina Diener , Stefano Minardi , Jörg-Uwe Pott , Robert R. Thomson , Stefan Nolte

We demonstrate for the first time to our knowledge the generation of overcritical plasma densities inside transparent solids over long distances using femtosecond laser pulses. This opens new avenues for high energy density physics in…

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