scholarly journals Automation of Target Delivery and Diagnostic Systems for High Repetition Rate Laser-Plasma Acceleration

2021 ◽  
Vol 11 (4) ◽  
pp. 1680
Author(s):  
Timofej Chagovets ◽  
Stanislav Stanček ◽  
Lorenzo Giuffrida ◽  
Andriy Velyhan ◽  
Maksym Tryus ◽  
...  
Keyword(s):  
Repetition Rate ◽  
High Repetition Rate ◽  
High Peak Power ◽  
Diagnostic Systems ◽  
Target Delivery ◽  
Detection Systems ◽  
High Repetition ◽  
Real Time Analysis ◽  
High Intensity Laser ◽  
Intensity Laser

Fast solid target delivery and plasma-ion detection systems have been designed and developed to be used in high intensity laser-matter interaction experiments. We report on recent progress in the development and testing of automated systems to refresh solid targets at a high repetition rate during high peak power laser operation (>1 Hz), along with ion diagnostics and corresponding data collection and real-time analysis methods implemented for future use in a plasma-based ion acceleration beamline for multidisciplinary user applications.

scholarly journals High-repetition-rate ( kHz) targets and optics from liquid microjets for high-intensity laser–plasma interactions

2019 ◽  
Vol 7 ◽  
Author(s):  
K. M. George ◽  
J. T. Morrison ◽  
S. Feister ◽  
G. K. Ngirmang ◽  
J. R. Smith ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Repetition Rate ◽  
High Intensity ◽  
High Repetition Rate ◽  
Plasma Interactions ◽  
Laser Plasma Interactions ◽  
High Repetition ◽  
High Intensity Laser ◽  
Liquid Microjets ◽  
Intensity Laser

High-intensity laser–plasma interactions produce a wide array of energetic particles and beams with promising applications. Unfortunately, the high repetition rate and high average power requirements for many applications are not satisfied by the lasers, optics, targets, and diagnostics currently employed. Here, we aim to address the need for high-repetition-rate targets and optics through the use of liquids. A novel nozzle assembly is used to generate high-velocity, laminar-flowing liquid microjets which are compatible with a low-vacuum environment, generate little to no debris, and exhibit precise positional and dimensional tolerances. Jets, droplets, submicron-thick sheets, and other exotic configurations are characterized with pump–probe shadowgraphy to evaluate their use as targets. To demonstrate a high-repetition-rate, consumable, liquid optical element, we present a plasma mirror created by a submicron-thick liquid sheet. This plasma mirror provides etalon-like anti-reflection properties in the low field of 0.1% and high reflectivity as a plasma, 69%, at a repetition rate of 1 kHz. Practical considerations of fluid compatibility, in-vacuum operation, and estimates of maximum repetition rate are addressed. The targets and optics presented here demonstrate a potential technique for enabling the operation of laser–plasma interactions at high repetition rates.

High repetition rate (100 Hz), high peak power, high contrast femtosecond laser chain

2016 ◽  
Author(s):  
R. Clady ◽  
V. Tcheremiskine ◽  
Y. Azamoum ◽  
A. Ferré ◽  
L. Charmasson ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
High Contrast ◽  
High Repetition

Passively Q-switched Yb:YAG micro-laser for high peak power high repetition rate burst of pulses emission

2018 ◽  
Author(s):  
Pierre Bourdon ◽  
Christophe Planchat ◽  
Didier Fleury ◽  
Julien Le Gouët ◽  
Francois Gustave ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
High Repetition

scholarly journals Improving Signal and Photobleaching Characteristics of Temporal Focusing Microscopy with the Increase in Pulse Repetition Rate

2019 ◽  
Vol 2 (3) ◽  
pp. 65
Author(s):  
Viktoras Lisicovas ◽  
Bala Murali Krishna Mariserla ◽  
Chakradhar Sahoo ◽  
Reuben T. Harding ◽  
Michael K. L. Man ◽  
...  
Keyword(s):  
Pulse Energy ◽  
Repetition Rate ◽  
Signal Intensity ◽  
High Repetition Rate ◽  
High Peak Power ◽  
High Pulse Energy ◽  
Two Photon ◽  
High Repetition ◽  
Laser Systems ◽  
High Pulse

Wide-field temporal focused (WF-TeFo) two-photon microscopy allows for the simultaneous imaging of a large planar area, with a potential order of magnitude enhancement in the speed of volumetric imaging. To date, low repetition rate laser sources with over half a millijoule per pulse have been required in order to provide the high peak power densities for effective two-photon excitation over the large area. However, this configuration suffers from reduced signal intensity due to the low repetition rate, saturation effects due to increased excitation fluences, as well as faster photobleaching of the fluorescence probe. In contrast, with the recent advent of high repetition rate, high pulse energy laser systems could potentially provide the advantages of high repetition rate systems that are seen in traditional two-photon microscopes, while minimizing the negatives of high fluences in WF-TeFo setups to date. Here, we use a 100 microjoule/high repetition rate (50–100 kHz) laser system to investigate the performance of a WF-TeFo two-photon microscope. While using micro-beads as a sample, we demonstrate a proportionate increase in signal intensity with repetition rate, at no added cost in photobleaching. By decreasing pulse intensity, via a corresponding increase in repetition rate to maintain fluorescence signal intensity, we find that the photobleaching rate is reduced by ~98.4%. We then image live C. elegans at a high repetition rate for 25 min. as a proof-of-principle. Lastly, we identify the steady state temperature increase as the limiting process in further increasing the repetition rate, and we estimate that repetition rate in the range between 0.5 and 5 MHz is ideal for live imaging with a simple theoretical model. With new generation low-cost fiber laser systems offering high pulse energy/high repetition rates in what is essentially a turn-key solution, we anticipate increased adoption of this microscopy technique by the neuroscience community.

High-repetition-rate, high-peak-power passively Q-switched ceramic Nd:YAG 946 nm laser

2015 ◽  
Author(s):  
Renpeng Yan ◽  
Xin Yu ◽  
Yufei Ma ◽  
Xudong Li ◽  
Jiang Li ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
High Repetition

High repetition rate, high peak power acousto-optical Q-switched 946 nm Nd:YAG laser

Laser Physics ◽  
2010 ◽  
Vol 20 (9) ◽  
pp. 1783-1786 ◽  
Author(s):  
X. Yu ◽  
C. Wang ◽  
F. Chen ◽  
R. P. Yan ◽  
X. D. Li ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
High Repetition

High-peak-power, high-repetition-rate LD end-pumped Nd:YVO4 burst mode laser

2016 ◽  
Vol 23 (3) ◽  
pp. 386-390 ◽  
Author(s):  
Hu Pan ◽  
Renpeng Yan ◽  
Xin Fa ◽  
Xin Yu ◽  
Yufei Ma ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Peak Power ◽  
High Repetition Rate ◽  
High Peak ◽  
High Peak Power ◽  
Mode Laser ◽  
Burst Mode ◽  
High Repetition
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