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An intense, short laser pulse propagating across a plasma boundary ponderomotively drives THz radiation. Full format PIC simulations and theoretical analysis are conducted to investigate the properties of this radiation. Simulation results…

Plasma Physics · Physics 2016-05-13 Chenlong Miao , John P. Palastro , Thomas M. Antonsen

Bubbles generated with lasers under confinement have been investigated for their potential use as the driving mechanism for liquid micro-jets in various microfluidic devices, such as needle free jet injectors. Here, we report on the study…

Fluid Dynamics · Physics 2022-11-22 Jelle J. Schoppink , Jan Krizek , Christophe Moser , David Fernandez Rivas

Typical sources of ultracold atoms operate with a considerable delay between the delivery of ensembles due to sequential trapping and cooling schemes. Therefore, alternative schemes for the continuous generation of ultracold atoms are…

Quantum Physics · Physics 2015-11-23 J. Mahnke , I. Kruse , A. Hüper , S. Jöllenbeck , W. Ertmer , J. Arlt , C. Klempt

The ionosphere of Titan hosts a complex ion chemistry leading to the formation of organic dust below 1200 km. Current models cannot fully explain the observed electron temperature in this dusty environment. To achieve new insight, we have…

Earth and Planetary Astrophysics · Physics 2022-02-17 A. Chatain , J. -E. Wahlund , O. Shebanits , L. Z. Hadid , M. Morooka , N. J. T. Edberg , O. Guaitella , N. Carrasco

Fast ignition is an alternative concept of laser fusion in which the task of compressing the fusion pellet to supersolid densities is accomplished by the conventional high energy nanosecond glass lasers and the task of igniting the…

Plasma Physics · Physics 2018-04-23 Atul Kumar , Chandrasekhar Shukla , Predhiman Kaw , Amita Das

We report on an experimental demonstration of laser wakefield electron acceleration using a sub-TW power laser by tightly focusing 30-fs laser pulses with only 8 mJ pulse energy on a 100 \mu m scale gas target. The experiments are carried…

Plasma Physics · Physics 2015-06-04 Z. -H. He , B. Hou , J. H. Easter , K. Krushelnick , J. A. Nees , A. G. R. Thomas

Plasma dynamics critically depends on density and temperature, thus well-controlled experimental realizations are essential benchmarks for theoretical models. The formation of an ultracold plasma can be triggered by ionizing a tunable…

We present a versatile laser system which provides more than 1.5W of narrowband light, tunable in the range from 455-463 nm. It consists of a commercial Titanium-Sapphire laser which is frequency doubled using resonant cavity second…

A strongly coupled ultracold plasma can be used as an excellent test platform for studying many-body interactions associated with various plasma phenomena. In this paper we discuss an approach that makes possible creation of the…

We demonstrate a simple and compact approach to laser cool and trap atoms based on laser-induced thermal ablation (LITA) of a pure solid granule. A rapid thermalisation of the granule leads to a fast recovery of the ultra-high vacuum…

Atomic Physics · Physics 2022-01-19 Chung Chuan Hsu , Rémy Larue , Chang Chi Kwong , David Wilkowski

Ultrahigh-power terahertz (THz) radiation sources are essential for many applications, such as nonlinear THz physics, THz-wave based compact accelerators, etc. However, until now none of THz sources reported, whether based upon large-scale…

Trapped ions are one of the most promising approaches for the realization of a universal quantum computer. Faster quantum logic gates could dramatically improve the performance of trapped-ion quantum computers, and require the development…

We study the propagation of 0.05-1 TW power, ultrafast laser pulses in a 10 meter long rubidium vapor cell. The central wavelength of the laser is resonant with the $D_2$ line of rubidium and the peak intensity in the $10^{12}-10^{14}…

Space-time structured laser pulses feature an intensity peak that can travel at an arbitrary velocity while maintaining a near-constant profile. These pulses can propagate in uniform media, where their frequencies are correlated with…

Plasma Physics · Physics 2025-03-21 J. P. Palastro , K. G. Miller , M. R. Edwards , A. L. Elliott , L. S. Mack , D. Singh , A. G. R. Thomas

Supercontinuum (SC) light source has advanced ultrafast laser spectroscopy in condensed matter science, biology, physics, and chemistry. Compared to the frequently used photonic crystal fibers and bulk materials, femtosecond laser…

We present a new and efficient method of generating twisted gamma rays utilizing highly accelerated helium-like ions; they are excited to a chosen state by irradiating two optical lasers and emit a photon with orbital angular momentum in…

High Energy Physics - Phenomenology · Physics 2022-08-24 Motomichi Tashiro , Noboru Sasao , Minoru Tanaka

We make a comparative study of hard x-ray emission from 15 $\mu$m methanol microdroplets and a plain slab target of similar atomic composition at similar laser intensities. The hard X-ray yield from droplet plasmas is $\simeq$ 35 times more…

Plasma Physics · Physics 2007-05-23 M. Anand , A. S. Sandhu , S. Kahaly , G. Ravindra Kumar , M. Krishnamurthy

Propagation of high-intensity, high-contrast ($<10^{-8}$), 50\,fs laser pulses through triangilar copper capillaries is experimentally studied. The relative transmission through 20-mm-long, about 50\,$\mu$m wide capillaries is directly…

Plasma Physics · Physics 2015-04-03 V. E. Leshchenko , K. V. Gubin , V. I. Trunov , K. V. Lotov , E. V. Pestryakov

We present a study on THz generation in lithium niobate pumped by a powerful and versatile Yb:CaF2 laser. The unique laser system delivers transform-limited pulses of variable duration (0.38-0.65 ps) with pulse energy of up to 15 mJ at a…

This study explores the suitability of hydrogen-based plasma in direct power extraction (DPE) as a non-conventional electricity generation method. We apply computational modeling and principles in physics and chemistry to estimate different…

Plasma Physics · Physics 2024-12-03 Osama A. Marzouk
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