检索结果-南通市图书馆

Aging effect of optical properties on low loss antireflection coatings for laser optics

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2013年第13期11卷 112-115页

作者：季一勤姜玉刚刘华松王利栓姜承慧陈德应 National Key Laboratory of Science and Technology on Tunable Laser Institute of Optical-Electronics Harbin Institute of Technology Harbin 150080 China Tianjin Key Laboratory of Optical Thin Film Tianjin 3inhang Institute of Technical Physics Tianjin 300192 China Key Laboratory of Advanced Micro-Structure Materials Ministry of Education Department of Physics Tongji University Shanghai 200092 China

For high precise laser systems like laser gyro, gravitational waves interferometers, the optical components which lie in the cavity or laser path need to control the total loss, scattering, reflection, absorption, and so on. Low loss high-reflection （HR） and antireflection （AR） coating mirrors are their key components and their aging optical properties are the most important performance parameters for long operating lifetime. Low loss AR coatings on quartz substrates for He-Ne laser are designed and manufactured by ion beam sputtering （IBS） technology. Ta205 and SiO2 are used as high and low refractive index materials and the obtained total optical loss of AIR coating is less than 50 ppm. Aging optical properties of AR coatings are investigated as a function of time placed in the air. When the placed time exceeds 40 days, optical properties tend to be stabilization. The obtained results indicate that the prepared low loss AR coatings have good stability of optical properties and can be applied for high precise laser systems.

关键词： antireflection coatings

Near-field holography enhanced with antireflection coatings--an improved method for fabricating diffraction gratings

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2016年第9期14卷 1-5页

作者：李媛芳陈火耀 Stefanie Kroker Thomas K?sebier 刘正坤邱克强刘颖 Ernst-Bernhard Kley 徐向东洪义麟付绍军 National Synchrotron Radiation Laboratory University of Science and Technology of China Institut für Angewandte Physik Friedrich-Schiller-Universit?t Jena Technische Universit?t Braunschweig Laboratory for Emerging Nanometrology Physikalisch-Technische Bundesanstalt

Near-field holography（NFH）, with its virtues of precise critical dimensions and high throughput, has a great potential for the realization of soft x-ray diffraction gratings. We show that NFH with reflections reduced by the integration of antireflective coatings（ARCs） simplifies the NFH process relative to that of setups using refractive index liquids. Based on the proposed NFH with ARCs, gold-coated laminar gratings were fabricated using NFH and subsequent ion beam etching. The efficiency angular spectrum shows that the stray light of the gratings is reduced one level of magnitude by the suppression of interface reflections during NFH.

关键词： antireflection coatings coatings Gold coatings Holography Ion beams Refractive index Spectrum analysis Stray light X ray diffraction

Modified porous silica antireflective coatings with laser damage resistance for Ti:sapphire

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2005年第4期3卷 244-246页

作者：贾巧英李海元刘瑞军唐永兴姜中宏 National Laboratory on High Power Laser and PhysicsShanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800

Porous SiO2 antireflective (AR) coatings are prepared from the colloidal silica solution modified with methyltriethoxysilane (MTES) based on the sol-gel route. The viscosity of modified silica suspensions changes but their stability keeps when MTES is introduced. The refractive indices of modified coatings vary little after bake treatment from 100 to 150℃. The modified silica coatings on Ti:sapphire crystal, owning good homogeneity, display prominent antireflective effect within the laser output waveband (750-850 nm) of Ti:sapphire lasers, with average transmission above 98.6%, and own laser induced damage thresholds (LIDTs) of more than 2.2 J/cm2 at 800 nm with the pulse duration of 300 ps.

关键词： antireflection coatings Atomic force microscopy Inertial confinement fusion Laser damage Morphology Porous materials Sapphire Silica Sol gels Stability Surface treatment Suspensions (fluids) Titanium Viscosity

Optimization of Al_2O_3/SiN_x stacked antireflection structures for N-type surface-passivated crystalline silicon solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2011年第9期32卷 58-61页

作者：吴大卫贾锐丁武昌陈晨武德起陈伟李昊峰岳会会刘新宇 Institute of Microelectronics Chinese Academy of Sciences

In the case of N-type solar cells,the anti-reflection property,as one of the important factors to further improve the energy-conversion efficiency,has been optimized using a stacked Al_2O_3/SiN_x *** effect of SiN_x layer thickness on the surface reflection property was systematically studied in terms of both experimental and theoretical *** the stacked Al_2O_3/SiN_x layers,results demonstrated that the surface reflection property can be effectively optimized by adding a SiN_x layer,leading to the improvement in the final photovoltaic characteristic of the N-type solar cells.

关键词： antireflection coatings aluminum oxide silicon nitride simulation solar cells

Accumulation effect of SiO_2 protective layer on multi-shot laser-induced damage in high-reflectivity HfO_2/SiO_2 coatings

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2011年第10期9卷 90-93页

作者：王营贺洪波赵元安单永光魏朝阳 Key Laboratory of Materials for High Power Lasers Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences

The accumulation effects in high-reflectivity （HR） HfO2/SiO2 coatings under laser irradiation are investigated. The HR HfO2/SiO2 coatings are prepared by electron beam evaporation at 1 064 nm. The laser-induced damage threshold （LIDT） are measured at 1 064 nm and at a pulse duration of 12 ns, in 1-on-1 and S-on-1 modes. Multi-shot LIDT is lower than single-shot LIDT. The laser-induced and native defects play an important role in the multi-shot mode. A correlative theory model based on critical conduction band electron density is constructed to elucidate the experimental phenomena.

关键词： antireflection coatings coatings Electron beams Hafnium oxides Laser damage Reflection

Post-treatment of 351 nm SiO_(2) antireflective coatings for high power laser systems prepared by the sol-gel method

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第1期20卷 89-93页

作者： Bin Shen Huai Xiong Xu Zhang Zhiya Chen Xiangyang Pang Yajing Guo Chengjie Liang Haiyuan Li Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Different post-treatment processes involving the use of ammonia and hexamethyldisilazane(HMDS) were explored for application to 351 nm third harmonic generation SiO_(2)antireflective(3ω SiO_(2)AR) coatings for high power laser systems prepared by the sol-gel *** to experimental analysis,the 3ω SiO_(2)AR coatings that were successively post-treated with ammonia and HMDS at 150℃ for 48 h and again heat-treated at 180℃ for 2 h(N/H 150+180 AR) were relatively *** were relatively fewer changes in the optical properties of the N/H 150+180 AR coating under a humid and polluted environment,and the increase in defect density was slow in high humidity *** laser-induced damage threshold of the N/H 150+180 AR coating reached 15.83 J/cm;(355 nm,6.8 ns),a value that meets the basic requirements of high power laser systems.

关键词： optical materials antireflection coatings sol-gel optics at surfaces laser damage thin films optical properties

A novel trilayer antireflection coating using dip-coating technique

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2011年第7期9卷 90-93页

作者：许坚尹伊马海敏叶辉刘旭 State Key Laboratory of Modern Optical Instrumentation Zhejiang University

We report a new structure for broadband antireflection coating by dip-coating technique, which has minimal cost and is compatible with large-scale manufacturing. The coatings are prepared by depositing SiO2 sol-gel film on a glass substrate, subsequently depositing SiO2 single-layer particle coating through electrostatic attraction, and depositing a final very thin SiO2 sol-gel film to improve the mechanical strength of the whole coating structure. The refractive index of the structure changes gradually from the top to the substrate. The transmittance of a glass substrate has been experimentally found to be improved in the spectral range of 400-1 400 nm and in the incidence angle range from 0° to at least 45°. The mechanical strength is immensely improved because of the additional thin SiO2 sol-gel layer. The surface texture can be applied to the substrates of different materials and shapes as an add-on coating.

关键词： antireflection coatings Electrostatic coatings Gels Glass Hardening Metallic films Refractive index Silicon compounds Sol gel process Sol gels Sols

The Fabrication and Characterization of Polarization Insensitive Semiconductor Optical Amplifier

在线全文

学校读者我要写书评

暂无评论

光学学报 2003年第S1期23卷 451-452页

作者： Lijuan Yu Weihua Guo Chunlin Han Yong-Zhen Huang Xiaoyu Ma Manqing Tan State Key Lab. on Integrated Optoelectronics Institute of Semiconductors) Chinese Academy of Sciences Beijing 100083 China

An angled facet strained bulk InGaAs SOA has been designed and fabricated. A device with double-layer antireflection coatings had <2dB polarization sensitivity and <0.5dB gain ripple.

关键词： polarization sensitivity antireflection coatings

Anti-reflection coating at 550 nm fabricated by atomic layer deposition

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2013年第13期11卷 40-42页

作者：李旸晖沈伟东章岳光郝翔范欢欢刘旭 State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China

Trimethylamine （TMA）, TIC14, and water are applied as the precursors to deposit Al2O3 and TiO2. With different substrate temperatures, the optical properties and surface morphologies of the two oxides TiO2 and SiO2 are studied, respectively. With substrate temperature of 120 ℃, amorphous TiO2 can be obtained, and the surface roughness （RMS） is only 0.928 nm. Applying Al2O3 and TiO2 deposited in 120 ℃ as low and high refractive index materials, anti-reflection （AR） coating at single point （550 nm） is designed. Furthermore, with the calibrated growth rates, this AR coating is fabricated, and its ultimate reflectance for the AR coating at 550 nm is less than 0.2%, which can meet the requirement for most applications.

关键词： 310.1210 antireflection coatings 310.1860 Deposition and fabrication 310.6860 Thin films, optical properties