Article
Optics
Zijian Cui, Lu Han, Chao Wang, Mingying Sun, De'an Liu, Jianqiang Zhu
Summary: In this study, the angular and temperature acceptances of noncritical phase-matching (NCPM) fourth- and fifth-harmonic generation (FHG and FiHG) of a 1077 nm laser in NH4H2PO4 (ADP), KH2PO4 (KDP), and KD2PO4 (DKDP) crystals were systematically demonstrated. A new laser frequency with a wavelength of 1077 nm was generated by optical parametric amplification, which can be used as a deep-ultraviolet laser source.
Article
Chemistry, Physical
Xuefei Wang, Yang Li, Zilong Chen, Jihyun Lee, Fangfang Zhang, Kenneth R. Poeppelmeier, Shilie Pan, Kang Min Ok
Summary: In this study, a novel nonlinear optical material Sr(NO3)(NH2SO3).H2O was successfully designed and synthesized. The compound exhibits unique structure, excellent second harmonic generation response, and optimized birefringence. It also forms large single crystals. This discovery introduces a new class of NLO materials and significantly expands the scope of structural chemistry.
Article
Optics
Yong Woo Kim, Byunggi Kim, Seungman Choi, Han Ku Nam, Hyunwoong Kim, Young-Jin Kim, Seung-Woo Kim
Summary: Optimizing EUV harmonics generated from crystals by pre-shaping the driving laser pulse via spectral phase modulation through a genetic algorithm can improve the EUV yield without increasing the incident laser fluence up to an order of magnitude.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sophie L. Pain, Nicholas E. Grant, John D. Murphy
Summary: Treatment with superacid bis-(trifluoromethanesulfonyl) amide enhances the properties of optoelectronic materials, resulting in longer effective carrier lifetimes and higher photoluminescence quantum yields. A study on crystalline silicon and transition metal dichalcogenide monolayers and flakes shows that structurally similar chemicals give passivating films with different charge levels, and treatment with analogues to TFSA can enhance the photoluminescence of MoS2 and WS2.
Article
Optics
Vyacheslav A. Trofimov, Dmitry M. Kharitonov, Mikhail Fedotov
Summary: This paper proposes a new scheme for fifth harmonic generation based on cascading third harmonic generation, which can improve frequency up-conversion efficiency. The feasibility of this scheme is theoretically demonstrated using multi-scale approach and can be applied directly to femtosecond pulses in a medium with cubic nonlinear response.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Khawla Azaiez, Rabia Benabderrahmane Zaghouani, Mahmoud Daoudi, Mosbah Amlouk, Wissem Dimassi
Summary: This study focuses on the impact of Bismuth solution treatment on the optical properties of p-type porous silicon. By incorporating Bi layers of variable thickness in porous silicon, the photoluminescence property in the visible region has been improved. This finding could be significant for various optoelectronic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Yudong Yang, Roland E. Mainz, Giulio Maria Rossi, Fabian Scheiba, Miguel A. Silva-Toledo, Phillip D. Keathley, Giovanni Cirmi, Franz X. Kartner
Summary: Attosecond science can reveal fundamental electronic dynamics in matter by improving spectral tunability and increasing photon flux in high-order harmonic sources. Parametric waveform synthesis enables the generation of highly-tunable isolated attosecond pulses, with central energy, spectral bandwidth/shape, and temporal duration controlled by shaping laser waveforms through relative-phase and carrier-envelope phase parameters. This advancement not only expands experimental possibilities in attosecond science, but also demonstrates coherent strong-field control of free-electron trajectories using tailored optical waveforms.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Benedikt Fischer, Wolfhard Beyer, Andreas Lambertz, Maurice Nuys, Weiyuan Duan, Kaining Ding, Uwe Rau
Summary: The application of thin underdense a-Si:H films for passivation of c-Si in SHJ solar cell technology has been investigated. The microstructure of underdense a-Si:H films was studied using Raman spectroscopy, effusion, and secondary ion mass spectrometry. The results showed that molecular hydrogen plays an important role in the passivation process. Solar cells using underdense a-Si:H as i1-layer achieved a maximum efficiency of 24.1%.
Article
Materials Science, Ceramics
Shiming Hao, Pengru Liu, Haozhan Wu, Huifang Wang, Jingpei Xie
Summary: SiC nanopowders were synthesized using silicon powders and expanded graphite as initial materials, and ferric nitrate as catalyst precursor. The effects of heat treatment temperature and the C/Si molar ratio on SiC products were investigated. The microstructure, phase composition, chemical state, and photoluminescence properties of the products were analyzed. The results showed that the 3C-SiC product had a higher content when heat-treated at 1400 degrees C for 3 hours with a C/Si molar ratio of 1:1. The formation process of 3C-SiC could be explained by a two-step method, and it exhibited potential applications in ultraviolet detectors, optoelectronic devices, and light emitters.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Jie Xu, Eric Plum, Vassili Savinov, Nikolay Zheludev
Summary: In this study, second harmonic generation was demonstrated using an amorphous silicon metamaterial fabricated on the tip of an optical fiber. The metamaterial is a double-chevron array that supports a closed-mode resonance for the fundamental wavelength at 1510 nm, with a quality factor of 30. The normalized resonant second harmonic conversion efficiency calculated per intensity and square of interaction length is approximately 10(-11) W-1, exceeding the previously achieved value for a silicon metamaterial by two orders of magnitude.
Article
Chemistry, Multidisciplinary
Wei-Jie Xie, Ru-Ling Tang, Sheng-Nan Yan, Nan Ma, Chun-Li Hu, Jiang-Gao Mao
Summary: Discovering new DUV nonlinear optical materials is a current research focus. However, integrating stringent performances, such as wide band gap and large NLO coefficient, into a crystal is challenging due to their natural incompatibility. This study proposes a boron-rich closed-loop strategy and successfully designs and synthesizes a new barium borate material, Ba4B14O25, which exhibits excellent NLO properties and holds promise as a DUV-transparent NLO candidate.
Article
Chemistry, Multidisciplinary
Mengen Gao, Hongping Wu, Hongwei Yu, Zhanggui Hu, Jiyang Wang, Yicheng Wu
Summary: A new oxy-borate BaYOBO3 (BaYBO) was successfully designed and synthesized as a promising deep-ultraviolet (UV) nonlinear optical (NLO) candidate, demonstrating a large second harmonic generation (SHG) response and a short UV cut-off edge.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Optics
Yali Sun, Artem Larin, Alexey Mozharov, Eduard Ageev, Olesia Pashina, Filipp Komissarenko, Ivan Mukhin, Mihail Petrov, Sergey Makarov, Pavel Belov, Dmitry Zuev
Summary: This paper investigates the application of electric fields in nanoscale engineering. It demonstrates the generation of a static electric field at the interface of a metal-semiconductor nanostructure through femtosecond laser irradiation. Experimental results show the influence of the optically induced static electric field on the second harmonic generation signal. The estimated value of the static electric field generated by light in this nanoantenna holds potential for various applications.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhuojun Liu, Jiayi Wang, Bo Chen, Yuming Wei, Wenjing Liu, Jin Liu
Summary: Two-dimensional layered materials like GaSe have shown promise as novel nonlinear optical materials, but their nonlinear responses are limited by short interaction lengths with light. By coupling 2D GaSe flakes to silicon metasurfaces, a significant enhancement of second-harmonic generation (SHG) has been achieved, opening up new possibilities for high-power coherent light sources.
Article
Optics
Shatha Kaassamani, Thierry Auguste, Nicolas Tancogne-Dejean, Xu Liu, Willem Boutu, Hamed Merdji, David Gauthier
Summary: High harmonic generation in solids exhibits laser polarization dependence, providing information about crystal and band structure. This study reports on the linear polarization dependence of high-order harmonic generation from a gallium arsenide crystal, indicating an anisotropic response that evolves with laser intensity.
Article
Optics
Holger Beh, Daniel Hiller, Jan Salava, Frantisek Trojanek, Margit Zacharias, Petr Maly, Jan Valenta
JOURNAL OF LUMINESCENCE
(2018)
Article
Materials Science, Multidisciplinary
Holger Beh, Daniel Hiller, Margit Zacharias
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Max O. Williams, Ada L. H. Jervell, Daniel Hiller, Margit Zacharias
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2018)
Article
Nanoscience & Nanotechnology
Daniel Hiller, Julian Lopez-Vidrier, Keita Nomoto, Michael Wahl, Wolfgang Bock, Tomas Chlouba, Frantisek Trojanek, Sebastian Gutsch, Margit Zacharias, Dirk Konig, Petr Maly, Michael Kopnarski
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2018)
Article
Computer Science, Interdisciplinary Applications
Irving Cruz-Matias, Dolors Ayala, Daniel Hiller, Sebastian Gutsch, Margit Zacharias, Sonia Estrade, Francesca Peiro
JOURNAL OF COMPUTATIONAL SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Krishna Kanth Neelisetty, Xiaoke Mu, Sebastian Gutsch, Alexander Vahl, Alan Molinari, Falk von Seggern, Mirko Hansen, Torsten Scherer, Margit Zacharias, Lorenz Kienle, V. S. Kiran Chakravadhanula, Christian Kuebell
MICROSCOPY AND MICROANALYSIS
(2019)
Article
Polymer Science
Dennis Graf, Sven Burchard, Julian Crespo, Christof Megnin, Sebastian Gutsch, Margit Zacharias, Thomas Hanemann
Article
Physics, Applied
J. L. Frieiro, J. Lopez-Vidrier, O. Blazquez, D. Yazicioglu, S. Gutsch, J. Valenta, S. Hernandez, M. Zacharias, B. Garrido
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Physics, Applied
T. Chlouba, F. Trojanek, V. Kopecky, J. Lopez-Vidrier, S. Hernandez, D. Hiller, S. Gutsch, M. Zacharias, P. Maly
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Multidisciplinary Sciences
J. Valenta, M. Greben, S. A. Dyakov, N. A. Gippius, D. Hiller, S. Gutsch, M. Zacharias
SCIENTIFIC REPORTS
(2019)
Article
Nanoscience & Nanotechnology
Deniz Yazicioglu, Sebastian Gutsch, Margit Zacharias
Article
Materials Science, Coatings & Films
Maximilian Kolhep, Cheng Sun, Juergen Blaesing, Bjoern Christian, Margit Zacharias
Summary: Highly textured ZnO thin films were successfully grown on Si(111) using an epitaxial AlN buffer layer at deposition temperatures between 100 and 300 degrees C. X-ray diffraction analysis confirmed epitaxial relationships and showed improved crystalline quality with increasing deposition temperatures. Additionally, a thermal postannealing step at 800 degrees C further enhanced the crystal structure.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Nanoscience & Nanotechnology
Jasmin-Clara Buerger, Serin Lee, Jan Buettner, Sebastian Gutsch, Maximilian Kolhep, Anna Fischer, Frances M. M. Ross, Margit Zacharias
Summary: The SnO2/ZnO core/shell nanowires, as anode materials in LIBs, were studied using electrochemical analysis and electron microscopy to understand the relationship between structural changes and battery performance. The combination of SnO2 and ZnO showed higher storage capacities, but cycling caused significant structural changes and loss of mechanical integrity. This study provides insights into the stability limitations of SnO2/ZnO heterostructure LIB anodes and offers guidance for the design of next-generation anode materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jasmin-Clara Burger, Sebastian Gutsch, Vanessa Wollersen, Di Wang, Bjorn Christian, Zhe Fu, Oliver Ambacher, Christian Kubel, Margit Zacharias
Summary: SnO2 nanowires were grown on r-plane sapphire substrates and characterized by scanning electron microscopy and atomic force microscopy, which revealed their highly oriented growth towards the substrate edges. High-resolution transmission electron microscopy and strain mapping were used to analyze the crystallographic alignment and defect distribution within the nanowire cross section. The findings were compared to freestanding SnO2 nanowires and SnO2 thin films on sapphire substrates.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Max Owen Williams, Maximilian Kolhep, Margit Zacharias
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2019)