检索结果-南通市图书馆

Influence of substrate surface roughness on light scattering of TiO2 optical thin films

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 2013年第13期11卷 83-86页

作者： Toshinori Harada Hiroshi Murotani Shigeharu Matumoto Hiromitu Honda course of electro photo optics Graduate School of Engineering Tokai University Japan Sincron Co. Ltd. Japan

Optical thin films are used in many optical elements; however, light scattering can be problematic. We investigate the effect of substrate surface roughness on the light scattering of optical thin films. The substrates are classified according to their surface roughness, from fine to very rough, and coated with a single TiO2 layer or a SiO2/TiO2 multilayer. The light scattering intensity increases as the substrate roughness increases. Scanning electron microscopy reveals that the number of nodules formed in the optical thin films increases with the substrate roughness, which affects the light scattering properties.

关键词：

Nonvolatile and reconfigurable two-terminal electro-optic duplex memristor based on Ⅲ-nitride semiconductors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第4期13卷 706-716页

作者： Zhiwei Xie Ke Jiang Shanli Zhang Jianwei Ben Mingrui Liu Shunpeng Lv Yang Chen Yuping Jia Xiaojuan Sun Dabing Li State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesDongnanhu Road No.3888Changchun 130033China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesYuquan Road No.19100049 BeijingChina

With the fast development of artificial intelligence(AI),Internet of things(IOT),etc,there is an urgent need for the technology that can efficiently recognize,store and process a staggering amount of *** AlScN material has unique advantages including immense remnant polarization,superior temperature stability and good latticematch to other III-nitrides,making it easy to integrate with the existing advanced III-nitrides material and device ***,due to the large band-gap,strong coercive field,and low photo-generated carrier generation and separation efficiency,it is difficult for AlScN itself to accumulate enough photo-generated carriers at the surface/interface to induce polarization inversion,limiting its application in in-memory sensing and *** this work,an electro-optic duplex memristor on a GaN/AlScN hetero-structure based Schottky diode has been *** twoterminal memristor shows good electrical and opto-electrical nonvolatility and *** both electrical and opto-electrical modes,the current on/off ratio can reach the magnitude of 104,and the resistance states can be effectively reset,written and long-termly *** on this device,the“IMP”truth table and the logic“False”can be successfully reproduced,indicating the huge potential of the device in the field of in-memory sensing and computing.

关键词： polarization duplex limiting

Complex Swift Hohenberg equation dissipative soliton fiber laser

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

photonics Research 2021年第6期9卷 1033-1038页

作者： ANKITA KHANOLKAR YIMIN ZANG ANDY CHONG Department of electro-optics and photonics University of DaytonDaytonOhio 45469USA Department of Physics University of DaytonDaytonOhio 45469USA

Complex Swift Hohenberg equation(CSHE)has attracted intensive research interest over the years,as it enables realistic modeling of mode-locked lasers with saturable absorbers by adding a fourth-order term to the spectral *** researchers have reported a variety of numerical solutions of CSHE which reveal interesting pulse patterns and *** this work,we have demonstrated a CSHE dissipative soliton fiber laser experimentally using a unique spectral filter with a complicated transmission *** behavior and performance of the laser agree qualitatively with the numerical simulations based on *** findings bring insight into dissipative soliton dynamics and make our mode-locked laser a powerful testbed for observing dissipative solitons of CSHE,which may open a new course in ultrafast fiber laser research.

关键词： fiber laser soliton

Ultrafast laser system based on noncollinear optical parametric amplification for laser spectroscopy

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese optics Letters 2015年第12期13卷 32-35页

作者：韩冬佳李妍妍杜鹃王坤李永舫 Tomohiro Miyatake Hitoshi Tamiaki Takayoshi Kobayashi 冷雨欣 State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow University Department of Materials Chemistry Ryukoku University Department of Bioscience and Biotechnology Ritsumeikan University Advanced Ultrafast Laser Research Center University of Electro-Communications FSA Collaborative Innovation Center Shanghai Jiao Tong University

We report the experimental demonstration of transform-limited sub-6 fs pulses at an optimal central wavelength by a tunable noncollinear optical parametric amplification（NOPA） source. Meanwhile, a white light continuum in the near-infrared（NIR） range from 900 to 1100 nm is also successfully generated by focusing the unconverted800 nm beam during NOPA generation on a sapphire rod. Both visible-pump/visible-probe and visible-pump/NIR-probe experiments are realized using the same laser system. As examples, ultrafast photo-induced exciton dynamics inside two kinds of materials are investigated by the visible-pump/visible-probe and visible-pump/NIR-probe spectroscopy, respectively.

关键词： Band structure Infrared devices Laser spectroscopy Pumping (laser) Sapphire Ultrafast lasers

High-Speed Optical Coherence Tomography System Using a 200-kHz Swept Light Source with a KTN Deflector

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

optics and photonics Journal 2013年第2期3卷 190-193页

作者： Yuichi Okabe Yuzo Sasaki Masahiro Ueno Takashi Sakamoto Seiji Toyoda Junya Kobayashi Masato Ohmi Graduate School of Medicine Course of Allied Health Science Osaka University Osaka Japan NTT photonics Laboratories Nippon Telegraph and Telephone Corporation Kanagawa Japan

We demonstrate a high-speed swept-source optical coherence tomography (SS-OCT) system, which is based on a high-speed swept light source and a Mach-Zehnder interferometer with a high-speed photodetector. The light source is an external-cavity laser tuned by a KTN electro-optic deflector, which exhibits a very fast response and large deflection. The scanning wavelength range is almost 80 nm up to 200 kHz with a ±400-V deflector driving voltage. The system acquires 1 mm × 1 mm images consisting of 200 × 200 pixels within few milliseconds. We present preliminary SS-OCT images of an in-vitro human nail and an in-vivo finger pad.

关键词： Swept-Source Optical Coherence Tomography KTN New Light Source

Monolayer Graphitic Carbon Nitride as Metal-Free Catalyst with Enhanced Performance in photo- and electro-Catalysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2022年第3期14卷 308-321页

作者： Huiyan Piao Goeun Choi Xiaoyan Jin Seong‑Ju Hwang Young Jae Song Sung‑Pyo Cho Jin‑Ho Choy Intelligent Nanohybrid Materials Laboratory(INML) Institute of Tissue Regeneration Engineering(ITREN)Dankook UniversityCheonan 31116Republic of Korea College of Science and Technology Dankook UniversityCheonan 31116Republic of Korea Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan 31116Republic of Korea Department of Materials Science and Engineering College of EngineeringYonsei UniversitySeoul 03722Republic of Korea SKKU Advanced Institute of Nanotechnology(SAINT) Sungkyunkwan University(SKKU)Suwon 440‑746Republic of Korea Department of Nano Engineering Sungkyunkwan University(SKKU)Suwon 440‑746Republic of Korea National Center for Inter‑University Research Facilities(NCIRF) Seoul National UniversitySeoul 08826Republic of Korea Graphene Research Center Advanced Institute of Convergence TechnologySuwon 16229Republic of Korea Department of Pre‑Medical course College of MedicineDankook UniversityCheonan 31116Republic of Korea Tokyo Tech World Research Hub Initiative(WRHI) Institute of Innovative ResearchTokyo Institute of TechnologyYokohama 226‑8503Japan

The exfoliation of bulk graphitic carbon nitride(g-C_(3)N_(4))into monolayer has been intensively studied to induce maximum sur-face area for fundamental studies,but ended in failure to realize chemi-cally and physically well-defined monolayer of g-C_(3)N_(4)mostly due to the difficulty in reducing the layer thickness down to an atomic *** has,therefore,remained as a challenging issue in two-dimensional(2D)chemistry and physics *** this study,an“atomic monolayer of g-C_(3)N_(4)with perfect two-dimensional limit”was successfully prepared by the chemically well-defined two-step *** atomically resolved monolayer of g-C_(3)N_(4)was also confirmed by spectroscopic and micro-scopic *** addition,the experimental Cs-HRTEM image was collected,for the first time,which was in excellent agreement with the theoretically simulated;the evidence of monolayer of g-C_(3)N_(4)in the perfect 2D limit becomes now clear from the HRTEM image of orderly hexagonal symmetry with a cavity formed by encirclement of three adjacent heptazine *** to bulk g-C_(3)N_(4),the present g-C_(3)N_(4)monolayer showed significantly higher photocatalytic gen-eration of H2O2 and H2,and electrocatalytic oxygen reduction *** addition,its photocatalytic efficiency for H2O2 production was found to be the best for any known g-C_(3)N_(4)nanomaterials,underscoring the remarkable advantage of monolayer formation in optimizing the catalyst performance of g-C_(3)N_(4).

关键词： Graphitic carbon nitride Monolayer Atomic image electro-and photo-catalysis