SPIE Laser Damage最新文献_第2页

What time-resolved measurements tell us about femtosecond laser damage? 关于飞秒激光损伤，时间分辨的测量告诉了我们什么?

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2195333

A. Melninkaitis, N. Šiaulys, L. Smalakys, Balys Momgaudis, Julius Vaicenavičius, Simona Barkauskaitė, V. Sirutkaitis, L. Gallais, S. Guizard

引用次数: 6

Comparative study of the laser damage threshold and optical characteristics of Ta2O5-SiO2 multilayers deposited using various methods 不同方法沉积Ta2O5-SiO2多层膜激光损伤阈值及光学特性的比较研究

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2194084

R. Botha, Silvia Schwyn Thöny, M. Größl, S. Mourad, C. Maissen, J. I. Venter, T. Südmeyer, M. Hoffmann, P. Bulkin, Sabine Linz-Dittrich, D. Bischof, M. Michler, S. Rinner, A. Ettemeyer

引用次数: 2

Design and laser damage properties of a dichroic beam combiner coating for 22.5° incidence and S polarization with high-transmission at 527nm and high-reflection at 1054nm 22.5°入射、S偏振、527nm高透射、1054nm高反射的二向色光束组合器涂层设计及激光损伤性能

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2218166

J. Bellum, E. Field, D. Kletecka, P. Rambo, I. Smith

{"title":"Design and laser damage properties of a dichroic beam combiner coating for 22.5° incidence and S polarization with high-transmission at 527nm and high-reflection at 1054nm","authors":"J. Bellum, E. Field, D. Kletecka, P. Rambo, I. Smith","doi":"10.1117/12.2218166","DOIUrl":"https://doi.org/10.1117/12.2218166","url":null,"abstract":"We have designed a dichroic beam combiner coating consisting of 11 HfO2/SiO2 layer pairs deposited on a large fused silica substrate. The coating provides high transmission (HT) at 527 nm and high reflection (HR) at 1054 nm for light at 22.5° angle of incidence (AOI) in air in S polarization (Spol). The coating's design is based on layers of near half-wave optical thickness in the design space for stable HT at 527 nm, with layer modifications that provide HR at 1054 nm while preserving HT at 527 nm. Its implementation in the 527 nm/1054 nm dual wavelength beam combiner arrangement has two options, with each option requiring one or the other of the high intensity beams to be incident on the dichroic coating from within the substrate (from glass). We show that there are differences between the two options with respect to the laser-induced damage threshold (LIDT) properties of the coating, and analyze the differences in terms of the 527 nm and 1054 nm E-field intensity behaviors for air → coating and glass → coating incidence. Our E-field analysis indicates that LIDTs for air → coating incidence should be higher than for glass → coating incidence. LIDT measurements for Spol at the use AOI with ns pulses at 532 nm and 1064 nm confirm this analysis with the LIDTs for glass → coating incidence being about half those for air → coating incidence at both wavelengths. These LIDT results and the E-field analysis clearly indicate that the best beam combiner option is the one for which the high intensity 527 nm beam is incident on the coating from air and the 1054 nm high intensity beam is incident on the coating from glass.","PeriodicalId":204978,"journal":{"name":"SPIE Laser Damage","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127851956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Optical coatings excited by femtosecond lasers near the damage threshold: challenges and opportunities 飞秒激光在损伤阈值附近激发的光学涂层:挑战与机遇

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2196553

L. Emmert, C. Rodriguez, Zhanliang Sun, F. Beygi Azar Aghbolagh, S. Günster, D. Ristau, D. Patel, C. Menoni, W. Rudolph

引用次数: 3

Characterization of damage precursor density from laser damage probability measurements with non-Gaussian beams 基于非高斯光束激光损伤概率测量的损伤前体密度表征

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2196604

F. Wagner, A. Melninkaitis, G. Batavičiūtė, C. Gouldieff, L. Smalakys, A. Beaudier, J. Natoli

{"title":"Characterization of damage precursor density from laser damage probability measurements with non-Gaussian beams","authors":"F. Wagner, A. Melninkaitis, G. Batavičiūtė, C. Gouldieff, L. Smalakys, A. Beaudier, J. Natoli","doi":"10.1117/12.2196604","DOIUrl":"https://doi.org/10.1117/12.2196604","url":null,"abstract":"Damage induced by nanosecond laser in optical materials can often be attributed to the presence of laser damage precursor in the material. The presence of these precursors within dielectric optics can be successfully described by so called distributed defect ensembles. The physical parameters of these precursor presence models can be deduced by fitting experimental laser damage probability data. For a degenerate defect ensemble these parameters are the precursor threshold and the precursor density in the sample. To deduce precursor densities correctly it is essential to consider the real shape of laser beam that often deviates from Gaussian or hat-top models. To address these issues we discuss a new fitting procedure that minimizes significant errors in the deduced model parameters using experimental beam profile images. We suggest two methods: Defining a Gaussian replacement beam or using a numerical approximation of the surface over threshold (SOT) of the real beam. Both methods are discussed at the example of a degenerate damage precursor population but apply to any type of damage precursor population.","PeriodicalId":204978,"journal":{"name":"SPIE Laser Damage","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114229299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-speed quantitative phase imaging of dynamic thermal deformation in laser irradiated films 激光辐照薄膜动态热变形的高速定量相位成像

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2195107

L. Taylor, A. Brown, K. Olson, J. Talghader

引用次数: 0

Investigating the relationship between material properties and laser-induced damage threshold of dielectric optical coatings at 1064 nm 研究了介质光学涂层在1064nm处材料性能与激光损伤阈值的关系

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2194784

R. Bassiri, C. Clark, I. Martin, A. Markosyan, P. Murray, J. Tessmer, S. Rowan, M. Fejer

引用次数: 8

Characterization of laser-induced damage by picosecond pulses on multi-layer dielectric coatings for petawatt-class lasers 皮秒脉冲对多层介质涂层激光致损伤的表征

SPIE Laser Damage Pub Date : 2015-11-23 DOI: 10.1117/12.2195528

R. Negres, C. Carr, I. Bass, D. Alessi, T. Laurence, K. Stanion, G. Guss, D. Cross, P. Wegner, C. Stolz