Retrofit of a High Power Nd:Glass Laser System with Liquid Crystal Polarizers

Aluminum flyer with thickness of 50μm and diameter of 1mm had been driven successfully by high-power Nd:Glass laser system. Average speed of the flyer was detected by piezoelectric Polyvinylidene Fluoride (PVDF) transducer, which reached 6.67km/s. Extent of damage to protective materials of spacecrafts was studied after they were hit by the driven aluminum flyer. The protective materials of spacecraft were damaged structurally in our experiment, and the damage observed under the microscope was also shown. It could be seen that the flyer knocked a tiny hole with diameter of about 1mm in the protective cellular board, and there were traces of impact damage around the tiny hole, which indicated that protective materials of spacecrafts would be damaged structurally when they were hit by flyer with size of 1mm. At the same time, the hyperspeed flyer still had good integrity and flatness. The results showed that laser-shockwave-driven hyperspeed flyer technology could be used as an effective experiment means to simulate high-speed space particles, which made it feasible to establish a set of simulation device of laser-shockwave-driven hyperspeed flyer for the research of protective materials of spacecrafts on the ground.

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Partially coherent light generated by using single and multimode optical fibers in a high‐power Nd:glass laser system

Applied Physics Letters ◽

10.1063/1.109955 ◽

1993 ◽

Vol 63 (5) ◽

pp. 580-582 ◽

Cited By ~ 44

Author(s):

H. Nakano ◽

N. Miyanaga ◽

K. Yagi ◽

K. Tsubakimoto ◽

T. Kanabe ◽

...

Keyword(s):

Optical Fibers ◽

High Power ◽

Laser System ◽

Coherent Light ◽

Partially Coherent ◽

Partially Coherent Light ◽

Nd:Glass Laser

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High-power, Joule-class, temporally shaped multi-pass ring laser amplifier with two Nd:glass laser heads

High Power Laser Science and Engineering ◽

10.1017/hpl.2018.68 ◽

2019 ◽

Vol 7 ◽

Cited By ~ 8

Author(s):

Jiangtao Guo ◽

Jiangfeng Wang ◽

Hui Wei ◽

Wenfa Huang ◽

Tingrui Huang ◽

...

Keyword(s):

High Power ◽

Ring Laser ◽

Laser System ◽

High Energy ◽

Fiber Structure ◽

Laser Amplifier ◽

Regenerative Amplifier ◽

Thermally Induced ◽

Diode Pumped ◽

Nd:Glass Laser

A high-power, Joule-class, nanosecond temporally shaped multi-pass ring laser amplifier system with two neodymium-doped phosphate glass (Nd:glass) laser heads is demonstrated. The laser amplifier system consists of three parts: an all-fiber structure seeder, a diode-pumped Nd:glass regenerative amplifier and a multi-pass ring amplifier, where the thermally induced depolarization of two laser heads is studied experimentally and theoretically. Following the injection of a square pulse with the pulse energy of 0.9 mJ and pulse width of 6 ns, a 0.969-J high-energy laser pulse at 1 Hz was generated, which had the ability to change the waveform arbitrarily, based on the all-fiber structure front end. The experimental results show that the proposed laser system is promising to be adopted in the preamplifier of high-power laser facilities.

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High power output stages of a Nd:glass laser system for fusion applications

Applied Optics ◽

10.1364/ao.15.001450 ◽

1976 ◽

Vol 15 (6) ◽

pp. 1450 ◽

Cited By ~ 1

Author(s):

J. N. Burdonsky ◽

E. V. Zhuzhukalo ◽

N. G. Kovalsky ◽

A. N. Kolomliisky ◽

M. I. Pergament ◽

...

Keyword(s):

High Power ◽

Power Output ◽

Laser System ◽

High Power Output ◽

Fusion Applications ◽

Output Stages ◽

Nd:Glass Laser

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Compact high power Raman laser system using phase-modulated sidebands amplified by a single tapered amplifier

CPEM 2010 ◽

10.1109/cpem.2010.5545269 ◽

2010 ◽

Author(s):

K. S. Lee ◽

S. E. Park ◽

T. Y. Kwon ◽

S. B. Lee ◽

J. Kim

Keyword(s):

High Power ◽

Laser System ◽

Raman Laser

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

Advanced Optical Technologies ◽

10.1515/aot-2017-0086 ◽

2018 ◽

Vol 7 (1-2) ◽

pp. 23-31 ◽

Cited By ~ 5

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.

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