scholarly journals Wavefront measurement techniques used in high power lasers

2014 ◽  
Vol 2 ◽  
Author(s):  
Haiyan Wang ◽  
Cheng Liu ◽  
Xiaoliang He ◽  
Xingchen Pan ◽  
Shenlei Zhou ◽  
...  
Keyword(s):  
High Power ◽  
Phase Measurement ◽  
Measurement Techniques ◽  
Wavefront Sensor ◽  
Power Laser ◽  
Laser Applications ◽  
High Power Lasers ◽  
Coherent Diffraction Imaging ◽  
Wavefront Measurement ◽  
Diffraction Imaging

AbstractThe properties of a series of phase measurement techniques, including interferometry, the Hartmann–Shack wavefront sensor, the knife-edge technique, and coherent diffraction imaging, are summarized and their performance in high power laser applications is compared. The advantages, disadvantages, and application ranges of each technique are discussed.

GHz femtosecond processing with agile high-power laser

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Eric Audouard ◽  
Guillaume Bonamis ◽  
Clemens Hönninger ◽  
Eric Mottay
Keyword(s):  
High Power ◽  
Repetition Rate ◽  
Thermal Ablation ◽  
Femtosecond Lasers ◽  
Optimal Choice ◽  
Process Conditions ◽  
High Power Laser ◽  
Power Laser ◽  
Ablation Efficiency ◽  
High Power Lasers

Abstract Bursts of GHz repetition rate pulses can significantly improve the ablation efficiency of femtosecond lasers. Depending on the process conditions, thermal mechanisms can be promoted and controlled. GHz ablation therefore combines thermal and non-thermal ablation mechanisms. With an optimal choice of the burst duration, the non-thermal ablation can be highly enhanced by a heating phase due to the first pulses in the burst. The GHz burst mode can be considered as a key function for the “agility” of new high-power lasers.

ALD anti-reflection coatings at 1ω, 2ω, 3ω, and 4ω for high-power ns-laser application

2018 ◽  
Vol 7 (1-2) ◽  
pp. 23-31 ◽  
Author(s):  
Hao Liu ◽  
Lars Jensen ◽  
Ping Ma ◽  
Detlev Ristau
Keyword(s):  
High Power ◽  
High Surface ◽  
Laser System ◽  
Damage Threshold ◽  
Atomic Layer ◽  
Intensity Difference ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications ◽  
Laser Induced Damage

AbstractAtomic layer deposition (ALD) facilitates the deposition of coatings with precise thickness, high surface conformity, structural uniformity, and nodular-free structure, which are properties desired in high-power laser coatings. ALD was studied to produce uniform and stable Al2O3and HfO2single layers and was employed to produce anti-reflection coatings for the harmonics (1ω, 2ω, 3ω, and 4ω) of the Nd:YAG laser. In order to qualify the ALD films for high-power laser applications, the band gap energy, absorption, and element content of single layers were characterized. The damage tests of anti-reflection coatings were carried out with a laser system operated at 1ω, 2ω, 3ω, and 4ω, respectively. The damage mechanism was discussed by analyzing the damage morphology and electric field intensity difference. ALD coatings exhibit stable growth rates, low absorption, and rather high laser-induced damage threshold (LIDT). The LIDT is limited by HfO2as the employed high-index material. These properties indicate the high versatility of ALD films for applications in high-power coatings.

scholarly journals High Power Laser Applications to Aerospace

2015 ◽  
Vol 43 (9) ◽  
pp. 611
Author(s):  
Akihiro SASOH ◽  
Toshikazu EBISUZAKI
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications

Broadband amplification at Kr 2 F trimer transition for short-pulse high-power laser applications

2010 ◽  
Author(s):  
Alexey O. Levchenko ◽  
Nikolai N. Ustinovskii ◽  
Vladimir D. Zvorykin
Keyword(s):  
High Power ◽  
Short Pulse ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications

Deformable mirror for high power laser applications

2015 ◽  
Author(s):  
Libor Mrňa ◽  
Martin Sarbort ◽  
Miroslava Hola
Keyword(s):  
High Power ◽  
Deformable Mirror ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications

Yb3+ doped (Ca,Sr,Ba)F2 for high power laser applications

Laser Physics ◽  
2009 ◽  
Vol 20 (2) ◽  
pp. 533-536 ◽  
Author(s):  
J. L. Doualan ◽  
P. Camy ◽  
A. Benayad ◽  
V. Ménard ◽  
R. Moncorgé ◽  
...  
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications
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