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A decrease in the damage threshold in dielectric materials induced by negatively chirped laser pulses

机译：负chi激光脉冲引起的介电材料损伤阈值的降低

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The threshold fluence for laser induced damage in wide band gap dielectric materials, such as fused silica and MgF_2, is observed to be lower by up to 20% for negatively (down) chirped pulses than for positively (up) chirped, at pulse durations ranging from 60 fs to 1 ps. This behavior of the threshold fluence for damage on the chirp direction was not observed in semiconductors, such as silicon and GaAs. Based on a model describing electron generation in the conduction band and Joule heating, it is suggested that the decrease in the damage threshold for negatively chirped pulse is related to the role of multiphoton ionization in wide gap materials.

机译：在脉冲宽度范围内，对于负（向下）chi脉冲，宽带隙介电材料（如熔融石英和MgF_2）中激光诱导的损伤的阈值通量比正（向上）rp脉冲降低了20％。从60 fs到1 ps。在诸如硅和GaAs之类的半导体中未观察到在the方向上损坏的阈值通量的这种行为。基于描述导带中电子生成和焦耳加热的模型，建议负chi脉冲的损伤阈值降低与宽间隙材料中多光子电离的作用有关。

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来源
《High-Power Laser Ablation VI pt.2》|2006年|P.62612W.1-62612W.7|共7页
会议地点 TaosNM(US)
作者
E. H. Louzon; Y. Ehrlich; M. Fraenkel; D. Fisher; S. Pecker; Z. Henis; A. Zigler;
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作者单位

Soreq Research Institute, Yavne 81800, Israel;

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会议组织
原文格式 PDF
正文语种 eng
中图分类激光技术、微波激射技术;
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专利

1. Reduction of damage threshold in dielectric materials induced by negatively chirped laser pulses [J] . E. Louzon, Z. Henis, S. Pecker, Applied Physics Letters . 2005,第24期

机译：降低负chi激光脉冲引起的介电材料损伤阈值
2. Determination of the damage growth threshold of multilayer dielectric gratings by picosecond laser pulses based on saturation damage size analysis [J] . Hao Yanfei, Sun Mingying, Jiao Zhaoyang, Applied optics . 2018,第15期

机译：基于饱和损伤尺寸分析，通过皮秒激光脉冲测定多层电介质光栅的损伤生长阈值
3. Laser-induced breakdown and damage in bulk transparent materials induced by tightly focused femtosecond laser pulses [J] . Chris B. Schaffer, Andre Brodeur, Eric Mazur Measurement Science & Technology . 2001,第11期

机译：紧密聚焦的飞秒激光脉冲在大块透明材料中引起的激光击穿和损坏
4. A decrease in the damage threshold in dielectric materials induced by negatively chirped laser pulses [C] . E. H. Louzon, Y. Ehrlich, M. Fraenkel, Conference on High-Power Laser Ablation . 2006

机译：带负啁啾激光脉冲引起的介电材料损伤阈值的减小
5. Modeling of laser -induced damage in dielectrics with subpicosecond pulses [D] . Apostolova, Tzveta Tihomirova 1999

机译：用子旋转脉冲造型激光诱导滤电损伤的建模
6. Importance of surface topography on pulsed laser-induced damage threshold of Sapphire crystals [O] . Benoît Bussière, Nicolas Sanner, Marc Sentis, -1

机译：表面形貌对脉冲激光诱导的蓝宝石晶体损伤阈值的重要性
7. Investigating the relationship between material properties and laser-induced damage threshold of dielectric optical coatings at 1064 nm [O] . Bassiri Riccardo, Clark Caspar, Martin Iain W., 2015

机译：研究介电光学涂层在1064 nm处的材料特性与激光损伤阈值之间的关系
8. Laser induced damage in multilayer dielectric gratings due to ultrashort laser pulses. Revision 1 [R] . Shore, B. W. , Stuart, B. C. , Feit, M. D. , 1995

机译：超短激光脉冲对多层介质光栅的激光损伤。修订版1

A decrease in the damage threshold in dielectric materials induced by negatively chirped laser pulses

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