采用不同高折射率材料的介质涂层在351nm纳秒范围内激光诱导损伤生长阈值。

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-08-01 DOI:10.1364/OL.559478

Marek Stehlik, Alexei A Kozlov, Kyle R P Kafka, Brittany N Hoffman, Sara MacNally, Amy L Rigatti, Stavros G Demos

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引用次数: 0

摘要

研究了HfO2/SiO2和Al2O3/SiO2反射镜在激光波长为351nm、脉冲时间为纳秒的激光损伤性能。提出了一种定量高重复率、大孔径激光系统激光损伤生长阈值的方法。结果表明，不能从通常用于评价光学材料性能的相应损伤起始阈值来推断损伤生长性能。在这两组高折射率材料的性能上也观察到系统的差异，Al2O3/SiO2反射镜在损伤生长阈值上表现出两倍的改善。

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Laser-induced damage-growth threshold at 351 nm in the nanosecond regime in dielectric coatings employing different high-index materials.

The laser-damage performance of HfO₂/SiO₂ and Al₂O₃/SiO₂ mirrors was investigated at a laser wavelength of 351 nm with nanosecond pulse durations. A method was developed to quantify the laser-induced damage-growth threshold under conditions relevant to high-repetition-rate, large-aperture laser systems. The results suggest that the damage-growth performance cannot be inferred from the corresponding damage-initiation threshold that is commonly used to evaluate the performance of optical materials. A systematic difference was also observed in the performance between these two groups of high-index materials, with the Al₂O₃/SiO₂ mirrors exhibiting about twofold improvement in the damage-growth threshold.

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.