Advanced Optical Technologies最新文献

Erratum: Terahertz focusing blazed diffractive optical elements for frequency demultiplexing 勘误：用于频率解复用的太赫兹聚焦炽热衍射光学元件

IF 1.8

Advanced Optical Technologies Pub Date : 2024-01-05 DOI: 10.3389/aot.2023.1360163

引用次数: 0

Investigation of laser-induced contamination on dielectric thin films in MHz sub-ps regime 研究介电薄膜在 MHz sub-ps 机制下的激光诱导污染问题

IF 1.8

Advanced Optical Technologies Pub Date : 2024-01-04 DOI: 10.3389/aot.2023.1261267

M. Stehlik, J. Zideluns, Camille Petite, Valentin Allard, Marco Minissale, A. Moreau, A. Lereu, F. Lemarchand, Frank Wagner, Julien Lumeau, Laurent Gallais

{"title":"Investigation of laser-induced contamination on dielectric thin films in MHz sub-ps regime","authors":"M. Stehlik, J. Zideluns, Camille Petite, Valentin Allard, Marco Minissale, A. Moreau, A. Lereu, F. Lemarchand, Frank Wagner, Julien Lumeau, Laurent Gallais","doi":"10.3389/aot.2023.1261267","DOIUrl":"https://doi.org/10.3389/aot.2023.1261267","url":null,"abstract":"High-repetition rate diode-pumped sub-ps lasers are widely used in the industrial sector for high-quality material processing applications. However, for their reliable operation, it is crucial to study the power handling capabilities of the optical components used in these systems. The optical components, such as mirrors, gratings, dichroic filters, and gain media, are designed based on dielectric thin films. When subjected to high-intensity laser radiation, the phenomenon of laser-induced contamination (LIC) can lead to the growth of a nanometric, highly absorbent layer on an irradiated optical surface, which can result in transmission or reflection loss and eventual permanent damage. In this study, we investigate LIC growth on dielectric oxide thin films in an air environment irradiated by MHz sub-ps laser at 515 nm. We examine the effect of thin film deposition method, material, and thickness on LIC growth dynamics. The irradiated spots on the surface are inspected using multiple observation methods, including white light interference microscopy and fluorescence imaging. Our results show that the LIC growth dynamics depend on the laser intensity and irradiation time and can be affected by the thin film deposition method, material, and thickness. These findings could be used to inform the development of more resistant optical components, ensuring long-term reliable laser operation required for industrial applications. The study highlights the need for validating optical components using tests that closely mimic real-world applications and provides insight into the complex processes that lead to LIC.","PeriodicalId":46010,"journal":{"name":"Advanced Optical Technologies","volume":"56 13","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139386872","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

Terahertz focusing blazed diffractive optical elements for frequency demultiplexing 用于频率解复用的太赫兹聚焦炽热衍射光学元件

IF 1.8

Advanced Optical Technologies Pub Date : 2023-12-01 DOI: 10.3389/aot.2023.1310578

M. Kaluza, P. Komorowski, P. Zagrajek, A. Siemion

引用次数: 0

Ultrafast laser processing of glass waveguide substrates for multi-fiber connectivity in co-packaged optics 用于共封装光学器件中多光纤连接的玻璃波导衬底的超快激光处理

IF 1.8

Advanced Optical Technologies Pub Date : 2023-08-30 DOI: 10.3389/aot.2023.1244009

Jason R. Grenier, L. Brusberg, K. Wieland, Juergen Matthies, Chad C. Terwilliger

{"title":"Ultrafast laser processing of glass waveguide substrates for multi-fiber connectivity in co-packaged optics","authors":"Jason R. Grenier, L. Brusberg, K. Wieland, Juergen Matthies, Chad C. Terwilliger","doi":"10.3389/aot.2023.1244009","DOIUrl":"https://doi.org/10.3389/aot.2023.1244009","url":null,"abstract":"High bandwidth demanding applications such as high-performance computing and hyperscale datacenters are drivers for co-packaged optics, which aims to bring optical signals as close as possible to the electrical computing chips by integrating the electro-optic transceivers and ASICs on the same package substrate. These next-generation switches require advanced fiber-to-chip connectivity and novel packaging concepts to enable sufficient power and cost savings. As such, low-loss, high bandwidth, and high fiber-counts are required at the photonic chip interface. In this work, these challenges are addressed by enabling the multi-fiber push-on (MPO) interface at the edge of integrated glass waveguide substrates and thus leverages the existing fiber connector eco-system. An ultrafast laser process is used to singulate glass wafers into individual photonic chips leaving optical-quality end-facets with <1 μm flatness over the 6.5 mm wide connector region thereby directly enabling low-loss fiber-to-chip edge-coupling. To overcome the high-costs and complex photonic packaging associated with active alignment of the fiber connectors to the glass waveguide interfaces, ultrafast laser-ablated features are accurately positioned on the glass substrate to enable self-alignment of the MPO connector guide-pins resulting in a passive alignment approach. Subsequent mating and de-mating of the MPO connector to the glass waveguide interface yields on average a 0.19 dB increase in the coupling loss compared to using active alignment.","PeriodicalId":46010,"journal":{"name":"Advanced Optical Technologies","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43118179","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

Light along curves: photonic shaping tools 光沿曲线:光子整形工具

IF 1.8

Advanced Optical Technologies Pub Date : 2023-07-26 DOI: 10.3389/aot.2023.1237132

D. Flamm, J. Hellstern, M. Kaiser, M. Kahmann, J. Kleiner, C. Tillkorn

引用次数: 2

Polarization-dependent orientation of LiNbO3:Eu3+ nanocrystals using ultrashort laser pulses in borosilicate glasses 硼硅酸盐玻璃中超短激光脉冲作用下LiNbO3:Eu3+纳米晶体的偏振相关取向

IF 1.8

Advanced Optical Technologies Pub Date : 2023-07-25 DOI: 10.3389/aot.2023.1237570

J. Ari, M. Cavillon, M. Lancry, B. Poumellec

{"title":"Polarization-dependent orientation of LiNbO3:Eu3+ nanocrystals using ultrashort laser pulses in borosilicate glasses","authors":"J. Ari, M. Cavillon, M. Lancry, B. Poumellec","doi":"10.3389/aot.2023.1237570","DOIUrl":"https://doi.org/10.3389/aot.2023.1237570","url":null,"abstract":"Femtosecond (fs) laser writing is a flexible way to induce three-dimensional local structural modifications inside glass materials, such as crystallization. The latter is a function of both glass composition, hence properties, and laser parameters. Previous works have shown that a glass composition of 33Li2O–33Nb2O5–13SiO2–21B2O3 (LNSB) mol% yields to crystallization of laser polarization orientable LiNbO3 nanocrystals upon irradiation with a 1,030 nm fs laser. In this paper, we present the effects of rare earth incorporation in the glass composition [i.e., europium (0.5, 1, and 2 mol%)] on the crystallization process of LiNbO3 nanocrystals induced by fs laser irradiation. The embedding of Eu3+ ions into these nanostructures has an interest in developing new integrated and miniaturized optical lasers and amplifiers in visible wavelengths. The influence of laser parameters, such as repetition rate (RR), pulse energy, and polarization, has been studied. Irradiated areas are investigated using optical and electron microscopy techniques. The effect of Eu3+ concentration on the crystallization behavior (crystal formation and morphology) is discussed, as Eu2O3 is not acting as a nucleation agent in LNSB glass up to 2 mol%.","PeriodicalId":46010,"journal":{"name":"Advanced Optical Technologies","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49588970","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

Photoinduced self-assembly of nanocrystals inside Al2O3-Lu2O3 glass 纳米晶体在Al2O3-Lu2O3玻璃中的光诱导自组装

IF 1.8

Advanced Optical Technologies Pub Date : 2023-07-25 DOI: 10.3389/aot.2023.1237663

T. Okuno, Y. Shimotsuma, M. Shimizu, K. Miura

引用次数: 0

Three-dimensional femtosecond laser inscription of type a-based high-efficiency first-order waveguide Bragg gratings 基于a型高效一阶波导布拉格光栅的三维飞秒激光刻字

IF 1.8

Advanced Optical Technologies Pub Date : 2023-07-25 DOI: 10.3389/aot.2023.1237679

R. Laberdesque, Laura Loi, T. Guérineau, Alain Abou Khalil, S. Danto, T. Cardinal, L. Canioni, Y. Petit

{"title":"Three-dimensional femtosecond laser inscription of type a-based high-efficiency first-order waveguide Bragg gratings","authors":"R. Laberdesque, Laura Loi, T. Guérineau, Alain Abou Khalil, S. Danto, T. Cardinal, L. Canioni, Y. Petit","doi":"10.3389/aot.2023.1237679","DOIUrl":"https://doi.org/10.3389/aot.2023.1237679","url":null,"abstract":"A novel type of waveguide Bragg grating (WBG) is demonstrated based on femtosecond laser-induced Type A refractive index modifications, namely based of the photochemistry of silver species in a specialty ortho-phosphate glass matrix. First-order WBGs are reported in the near-infrared and down to 736 nm in the visible. Relative transmission measurements with a 500 µm long WBGs lead to narrow-bandwidth attenuations (sub-nm spectral FWHM) from 2.29 dB to 6.25 dB for periods from 240 nm to 280 nm, respectively. The corresponding estimated backward coupling coefficients show high values from 1.66 mm-1 up to 2.69 mm-1. Additionally, we report on a true 3D helix-shaped WBG that shows an even stronger relative attenuation of 10.3 dB for a 500 µm long WBG, equivalently corresponding to a backward coupling coefficient of 3.7 mm-1. These novel results pave the way for new silver-based laser-inscribed integrated photonic devices, among which the combination of Bragg gratings to form active/passive optical resonators, but also the direct inscription of WBG at the glass interface for enhanced sensing applications.","PeriodicalId":46010,"journal":{"name":"Advanced Optical Technologies","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47961548","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

Ultrafast laser volume nanostructuring; a limitless perspective 超快激光体积纳米结构;无限的视角

IF 1.8

Advanced Optical Technologies Pub Date : 2023-07-11 DOI: 10.3389/aot.2023.1237524

R. Stoian

引用次数: 0

Making impact 生产的影响

IF 1.8

Advanced Optical Technologies Pub Date : 2022-11-07 DOI: 10.1515/aot-2022-0035

A. Thoss

引用次数: 0