Development of a High-Energy Pulse Burst Laser System for High-Speed Fluid Dynamics and Combustion Measurements

2013 ◽  
Author(s):  
Frederik Fuest ◽  
Michael Papageorge ◽  
Walter Lempert ◽  
Jeffrey Sutton
Keyword(s):  
Fluid Dynamics ◽  
High Speed ◽  
Laser System ◽  
High Energy ◽  
Pulse Burst ◽  
Energy Pulse

High-energy pulse-burst laser system for megahertz-rate flow visualization

2000 ◽  
Vol 25 (22) ◽  
pp. 1639 ◽  
Author(s):  
Pingfan P. Wu ◽  
Richard B. Miles
Keyword(s):  
Flow Visualization ◽  
Laser System ◽  
High Energy ◽  
Pulse Burst ◽  
Energy Pulse

Highly-efficient, high-energy pulse-burst Yb-doped fiber laser with transform limited linewidth

2014 ◽  
Author(s):  
Doruk Engin ◽  
Ibraheem Darab ◽  
John Burton ◽  
Jean-Luc Fouron ◽  
Frank Kimpel ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Energy ◽  
Pulse Burst ◽  
Highly Efficient ◽  
Energy Pulse

scholarly journals Micromachining of Invar with 784 Beams Using 1.3 ps Laser Source at 515 nm

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2962 ◽  
Author(s):  
Petr Hauschwitz ◽  
Bohumil Stoklasa ◽  
Jiří Kuchařík ◽  
Hana Turčičová ◽  
Michael Písařík ◽  
...  
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Light Emitting Diode ◽  
Laser System ◽  
Ultrashort Pulses ◽  
High Energy ◽  
Laser Source ◽  
Organic Light Emitting Diode ◽  
Energy Pulse ◽  
Cost Efficient ◽  
Monitoring Module

To fulfil the requirements for high-resolution organic light-emitting diode (OLED) displays, precise and high-quality micrometer-scale patterns have to be fabricated inside metal shadow masks. Invar has been selected for this application due to its unique properties, especially a low coefficient of thermal expansion. In this study, a novel cost-efficient method of multi-beam micromachining of invar will be introduced. The combination of a Meopta beam splitting, focusing and monitoring module with a galvanometer scanner and HiLASE high-energy pulse laser system emitting ultrashort pulses at 515 nm allows drilling and cutting of invar foil with 784 beams at once with high precision and almost no thermal effects and heat-affected zone, thus significantly improving the throughput and efficiency.

Pulse-burst laser system for high-speed flow diagnostics

1996 ◽  
Author(s):  
W. Lempert ◽  
P.-F. Wu ◽  
R. Miles ◽  
B. Zhang ◽  
J. Lowrance ◽  
...  
Keyword(s):  
High Speed ◽  
Laser System ◽  
High Speed Flow ◽  
Flow Diagnostics ◽  
Pulse Burst ◽  
Speed Flow

Tunable pulse-burst laser system for high-speed imaging diagnostics

1998 ◽  
Author(s):  
Pingfan Wu ◽  
Walter Lempert ◽  
Richard Miles ◽  
Leigh Bromley
Keyword(s):  
High Speed ◽  
Laser System ◽  
High Speed Imaging ◽  
Imaging Diagnostics ◽  
Pulse Burst

scholarly journals Advances in Imaging Diagnostics for Spray and Particle Research in High-Speed Flows

2020 ◽  
Vol 10 (4) ◽  
pp. 1450
Author(s):  
Julien Manin ◽  
William D. Bachalo
Keyword(s):  
High Speed ◽  
Imaging System ◽  
Light Emitting Diode ◽  
Laser System ◽  
Optical Design ◽  
High Energy ◽  
Solid Particles ◽  
Diagnostic Methods ◽  
Microscope Imaging ◽  
High Speed Flows

Measurements of high-pressure sprays and particle fields in high-speed flows have been very challenging for the existing instrumentation. Deformed drops or solid particles significantly limit the range of experimental methods that can be applied for detailed, quantitative measurements. We developed advanced microscope imaging equipment and diagnostic methods to characterize fast-moving droplets or particles. We designed illumination systems based on high-power light-emitting diode (LED) and incoherent laser devices capable of short, intense light pulses. We compared their characteristics and performance separately, as well as their interaction within a complete line-of-sight microscope imaging system. The optical design of the microscope setup was optimized via ray tracing simulations showing high energy losses for LED illumination compared to laser radiation, as confirmed experimentally. The energy transmission measurements provided guidance about the pulse energy density necessary to maximize camera response and signal-to-noise ratio. Characterization testing supported that both illumination systems are valid options for microscopy applications, with an advantage to LED for image quality and resolution performance, but a strong limitation to distance, where the multi-beam laser system demonstrated its superiority.

High-Energy Pulse Stacking via Regenerative Pulse-Burst Amplification

2016 ◽  
Author(s):  
I. Astrauskas ◽  
E. Kaksis ◽  
T. Flöry ◽  
G. Andriukaitis ◽  
A. Pugžlys ◽  
...  
Keyword(s):  
High Energy ◽  
Pulse Burst ◽  
Energy Pulse

High-speed CH2O PLIF imaging in turbulent flames using a pulse-burst laser system

2012 ◽  
Vol 106 (3) ◽  
pp. 569-575 ◽  
Author(s):  
K. N. Gabet ◽  
R. A. Patton ◽  
N. Jiang ◽  
W. R. Lempert ◽  
J. A. Sutton
Keyword(s):  
High Speed ◽  
Laser System ◽  
Turbulent Flames ◽  
Pulse Burst

scholarly journals High-energy pulse stacking via regenerative pulse-burst amplification

2017 ◽  
Vol 42 (11) ◽  
pp. 2201 ◽  
Author(s):  
Ignas Astrauskas ◽  
Edgar Kaksis ◽  
Tobias Flöry ◽  
Giedrius Andriukaitis ◽  
Audrius Pugžlys ◽  
...  
Keyword(s):  
High Energy ◽  
Pulse Burst ◽  
Energy Pulse
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