Polarizing Optical Components For High Power Glass Laser Systems

1976 ◽  
Author(s):  
Stanley Refermat ◽  
Jay Eastman
Keyword(s):  
High Power ◽  
Glass Laser ◽  
Optical Components ◽  
Laser Systems

High-power neodymium glass laser systems for fusion research

1980 ◽  
Vol 298 (1439) ◽  
pp. 393-405
Keyword(s):  
System Performance ◽  
Laser Energy ◽  
Beam Quality ◽  
Glass Laser ◽  
Optical Components ◽  
Fusion Research ◽  
Laser Systems ◽  
Key Issues ◽  
Laser Design ◽  
Neodymium Glass

One of the key issues of scientific feasibility experiments for fusion research is to construct a laser energy driver delivering enough output power for implosion. We have constructed a series of glass laser systems: Gekko II silicate glass laser (two-beam) 0.4 TW, Gekko IV phosphate glass laser (four-beam), 4 TW, and modules of Gekko XII, which will achieve 40 TW at full size. Laser glass is critical for delivering a large amount of power in a short duration without deterioration of the beam quality. Phosphate and fluorophosphate glasses have been investigated for an advanced laser design. Optical components have been developed which are expected to be very reliable. A system performance of lasers is also very important for experimental work.

Development of High Power Glass Laser systems in NLHPLP

2017 ◽  
Author(s):  
Jianqiang Zhu ◽  
Jian Zhu ◽  
Xuechun Li ◽  
Baoqiang Zhu ◽  
Weixin Ma ◽  
...  
Keyword(s):  
High Power ◽  
Glass Laser ◽  
Laser Systems

New laser glasses for high-power glass laser systems

1976 ◽  
Vol 18 (2) ◽  
pp. 214
Author(s):  
T. Izumitani ◽  
M. Tsuru ◽  
Y. Asahara ◽  
Y. Kato ◽  
C. Yamanaka
Keyword(s):  
High Power ◽  
Glass Laser ◽  
Laser Systems

scholarly journals Femtosecond Laser-Induced Damage Characterization of Multilayer Dielectric Coatings

Coatings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 603 ◽  
Author(s):  
Praveen Kumar Velpula ◽  
Daniel Kramer ◽  
Bedrich Rus
Keyword(s):  
Femtosecond Laser ◽  
High Power ◽  
Damage Threshold ◽  
Test Methods ◽  
Optical Components ◽  
Damage Mechanisms ◽  
Coating Failure ◽  
Raster Scan ◽  
Laser Systems ◽  
Laser Induced Damage

The laser-induced damage threshold (LIDT) of optical components is one of the major constraints in developing high-power ultrafast laser systems. Multi-layer dielectric (MLD) coatings-based optical components are key parts of high-power laser systems because of their high damage resistance. Therefore, understanding and characterizing the laser-induced damage of MLD coatings are of paramount importance for developing ultrahigh-intensity laser systems. In this article, we overview the possible femtosecond laser damage mechanisms through damage morphologies in various MLD optical coatings tested in our facility. To evaluate the major contributions to the coating failure, different LIDT test methods (R-on-1, ISO S-on-1 and Raster Scan) were carried out for a high reflective hybrid Ta2O5/HfO2/SiO2 MLD mirror coating at a pulse duration of 37 fs. Different LIDT test methods were compared due to the fact that each test method exposes the different underlying damage mechanisms. For instance, the ISO S-on-1 test at a higher number of laser pulses can bring out the fatigue effects, whereas the Raster Scan method can reveal the non-uniform defect clusters in the optical coating. The measured LIDT values on the sample surface for the tested coating in three test methods are 1.1 J/cm2 (R-on-1), 0.9 J/cm2 (100k-on-1) and 0.6 J/cm2 (Raster Scan) at an angle of incidence of 45 deg. The presented results reveal that the performance of the tested sample is limited by coating defects rather than fatigue effects. Hence, the Raster Scan method is found to be most accurate for the tested coating in evaluating the damage threshold for practical applications. Importantly, this study demonstrates that the testing of different LIDT test protocols is necessary in femtosecond regime to assess the key mechanisms to the coating failure.

Development of faraday rotations for high-power glass laser systems

1980 ◽  
Vol 100 (2) ◽  
pp. 80-87
Author(s):  
Kunio Yoshida ◽  
Yoshiaki Kato ◽  
Chiyoe Yamanaka
Keyword(s):  
High Power ◽  
Glass Laser ◽  
Laser Systems

scholarly journals Numerical simulation of debris-removal trajectories on the transport mirrors in high-power laser systems

2015 ◽  
Vol 3 ◽  
Author(s):  
Yangshuai Li ◽  
Jianqiang Zhu ◽  
Xiangyang Pang ◽  
Hua Tao ◽  
Xiang Jiao ◽  
...  
Keyword(s):  
High Power ◽  
Mirror Surface ◽  
High Power Laser ◽  
Discrete Phase Model ◽  
Power Laser ◽  
Lagrange Method ◽  
Optical Components ◽  
Debris Removal ◽  
Laser Systems ◽  
Discrete Phase

In high-power laser systems (HPLSs), understanding debris-removal trajectories is important in eliminating debris from the surfaces of transport mirrors online and keeping other optical components free from contamination. NS equations, the RNG $k{-}{\it\varepsilon}$ model and the discrete phase model of the Euler–Lagrange method are used to conduct numerical simulations on the trajectories of contaminant particles of different sizes and types on the mirror surface using Fluent commercial software. A useful device is fabricated based on the simulation results. This device can capture and collect debris from the mirror surface online. Consequently, the effect of debris contamination on other optical components is avoided, cleaning time is shortened, and ultimately, the cleanliness of the mirrors in HPLSs is ensured.

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