Optical Materials Express最新文献

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2023 Optical Materials Express Emerging Researcher Best Paper Prize: editorial 2023 年《光学材料快报》新锐研究员最佳论文奖:编辑
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-07-29 DOI: 10.1364/ome.538144
Andrea Alù, Alessandro Salandrino
{"title":"2023 Optical Materials Express Emerging Researcher Best Paper Prize: editorial","authors":"Andrea Alù, Alessandro Salandrino","doi":"10.1364/ome.538144","DOIUrl":"https://doi.org/10.1364/ome.538144","url":null,"abstract":"<jats:italic>Optical Materials Express</jats:italic> Editor-in-Chief, Andrea Alù, Deputy Editor, Alessandro Salandrino, and the members of the 2023 Emerging Researcher Best Paper prize committee announce the recipients of the 2023 prize.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"64 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced p-type conductivity of hexagonal boron nitride by an efficient two-step doping strategy 通过高效的两步掺杂策略增强六方氮化硼的 p 型电导率
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-06-27 DOI: 10.1364/ome.523859
Yuang Cheng, Yang Chen, Bingchen Lv, Zhiming Shi, Yuanyuan Yue, Yuping Jia, Ke Jiang, Xiaoyu Wei, Dabing Li, Shanli Zhang, Xiaojuan Sun
{"title":"Enhanced p-type conductivity of hexagonal boron nitride by an efficient two-step doping strategy","authors":"Yuang Cheng, Yang Chen, Bingchen Lv, Zhiming Shi, Yuanyuan Yue, Yuping Jia, Ke Jiang, Xiaoyu Wei, Dabing Li, Shanli Zhang, Xiaojuan Sun","doi":"10.1364/ome.523859","DOIUrl":"https://doi.org/10.1364/ome.523859","url":null,"abstract":"The present study proposes a two-step doping strategy for achieving efficient Mg doping of h-BN, involving an additional post-annealing treatment. This approach leads to ∼10<jats:sup>8</jats:sup>-fold enhancement in conductivity of h-BN, compared with the as-doped h-BN grown by low-pressure chemical vapor deposition. The mechanism for large enhancement in h-BN doping efficiency after post-annealing was investigated, providing evidence that this treatment not only facilitates the nanoparticle decomposition and incorporation of Mg atoms into h-BN, but also restores its lattice defects. The efficient two-step doping strategy for p-type h-BN in this study enlightens its promising prospects for ultraviolet optoelectronic devices.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"146 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Femtosecond laser synthesis of YAG:Ce3+ nanoparticles in liquid 飞秒激光合成液态 YAG:Ce3+ 纳米粒子
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-06-24 DOI: 10.1364/ome.530234
Pan Liang, Xin Jia, Hua Zhao, Rongrong Hu, Kai Jiang
{"title":"Femtosecond laser synthesis of YAG:Ce3+ nanoparticles in liquid","authors":"Pan Liang, Xin Jia, Hua Zhao, Rongrong Hu, Kai Jiang","doi":"10.1364/ome.530234","DOIUrl":"https://doi.org/10.1364/ome.530234","url":null,"abstract":"YAG:Ce<jats:sup>3+</jats:sup> nanocrystals are promising bio-labeling materials due to their low toxicity and high photostability. It is in demand to efficiently synthesize YAG:Ce<jats:sup>3+</jats:sup> nanocrystals of a small size. Pulse laser ablation is an approach to produce nanoparticles directly from bulk materials with the advantages of smaller particle sizes and lower production costs. Here, we present the synthesis of YAG:Ce<jats:sup>3+</jats:sup> nanocrystals from bulk crystal using the femtosecond laser ablation method in liquid. Comparing the liquid environment, we demonstrated that the lauryl dimethylaminoacetic acid betain (LDA) aqueous solution is preferred for the formation of smaller-sized YAG:Ce<jats:sup>3+</jats:sup> nanoparticles than deionized water due to the attractiveness between the LDA molecules and the YAG:Ce<jats:sup>3+</jats:sup> nanoparticles. We also verified that the high laser repetition rate had no effect on the average size of YAG:Ce<jats:sup>3+</jats:sup> nanocrystals, where the fragmentation process is saturated under a high laser repetition rate. This study provides a simple and effective method to synthesize small size YAG:Ce<jats:sup>3+</jats:sup> nanoparticles by femtosecond laser ablation in liquid.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Silicon nanohole based enhanced light absorbers for thin film solar cell applications 应用于薄膜太阳能电池的基于硅纳米孔的增强型光吸收器
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-06-24 DOI: 10.1364/ome.528499
Rony Das, Badhan Golder, Dip Sarker, Arif Ahammad
{"title":"Silicon nanohole based enhanced light absorbers for thin film solar cell applications","authors":"Rony Das, Badhan Golder, Dip Sarker, Arif Ahammad","doi":"10.1364/ome.528499","DOIUrl":"https://doi.org/10.1364/ome.528499","url":null,"abstract":"We proposed a nanohole-based silicon (Si) absorber structure to enhance the light absorption of thin-film Si solar cells. Our proposed structures exhibited excellent performances harnessing the light-matter interaction phenomenon with a few microns of thick Si (3 <jats:italic>µ</jats:italic>m). We employed the finite-difference time-domain method to analyze the optical properties and solved Poisson’s, continuity, and heat transfer equations to analyze the electrical and thermal properties of our proposed structures, operating in the wavelength range from 300 to 1100 nm. We obtained a maximum average absorption of 72.6% for our proposed square hole Si absorber structure. The power conversion efficiency and short circuit current density were calculated to be 20.74% and 39.91 mA/cm<jats:sup>2</jats:sup>. We achieved polarization-insensitive performance due to the symmetrical nature of the structure. The temperature of our proposed structure was increased by ∼10 K due to light absorption for different ambient temperatures. Moreover, we found our proposed structure was thermally stable over time. Our proposed structures can enhance the absorption of Si nanostructures, which can be conducive to designing Si-thin solar cells for energy harvesting.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"10 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the thermal stability of multilayer optics for use with high X-ray intensities 关于用于高强度 X 射线的多层光学器件的热稳定性
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-06-24 DOI: 10.1364/ome.527226
Margarita Zakharova, Zlatko Rek, Božidar Šarler, Saša Bajt
{"title":"On the thermal stability of multilayer optics for use with high X-ray intensities","authors":"Margarita Zakharova, Zlatko Rek, Božidar Šarler, Saša Bajt","doi":"10.1364/ome.527226","DOIUrl":"https://doi.org/10.1364/ome.527226","url":null,"abstract":"High-intensity X-ray free electron laser (XFEL) beams require optics made of materials with minimal radiation absorption, high diffraction efficiency, and high radiation hardness. Multilayer Laue lenses (MLLs) are diffraction-based X-ray optics that can focus XFEL beams, as already demonstrated with tungsten carbide/silicon carbide (WC/SiC)-based MLLs. However, high atomic number materials such as tungsten strongly absorb X-rays, resulting in high heat loads. Numerical simulations predict much lower heat loads in MLLs consisting of low atomic number Z materials, although such MLLs have narrower rocking curve widths. In this paper, we first screen various multilayer candidates and then focus on Mo<jats:sub>2</jats:sub>C/SiC multilayer due to its high diffraction efficiency. According to numerical simulations, the maximum temperature in this multilayer should remain below 300°C if the MLL made out of this multilayer is exposed to an XFEL beam of 17.5 keV photon energy, 1 mJ energy per pulse and 10 kHz pulse repetition rate. To understand the thermal stability of the Mo<jats:sub>2</jats:sub>C/SiC multilayer, we performed a study on the multilayers of three different periods (1.5, 5, and 12 nm) and different Mo<jats:sub>2</jats:sub>C to SiC ratios. We monitored their periods, crystallinity, and stress as a function of annealing temperature for two different heating rates. The results presented in this paper indicate that Mo<jats:sub>2</jats:sub>C/SiC-based MLLs are viable for focusing XFEL beams without being damaged under these conditions.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"44 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature dependence of THz generation efficiency, THz refractive index, and THz absorption in lithium-niobate around 275 GHz 275 GHz 附近铌酸锂中太赫兹产生效率、太赫兹折射率和太赫兹吸收的温度依赖性
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-06-18 DOI: 10.1364/ome.528491
Umit Demirbas, Christian Rentschler, Zhelin Zhang, Mikhail Pergament, Nicholas H. Matlis, Franz X. Kärtner
{"title":"Temperature dependence of THz generation efficiency, THz refractive index, and THz absorption in lithium-niobate around 275 GHz","authors":"Umit Demirbas, Christian Rentschler, Zhelin Zhang, Mikhail Pergament, Nicholas H. Matlis, Franz X. Kärtner","doi":"10.1364/ome.528491","DOIUrl":"https://doi.org/10.1364/ome.528491","url":null,"abstract":"In this study, we demonstrate the capabilities of the pulse train excitation approach in determining key material properties of nonlinear crystals, such as refractive index, thermo-optic coefficient, and absorption. The method provides reliable results even at relatively low THz frequencies, where other characterization methods, such as THz time-domain spectroscopy, have difficulties. To illustrate the capabilities of our approach, we used pulse trains with 800-fs long pulses and adjustable time delay to investigate the material properties of periodically poled lithium niobate (PPLN) crystal with a poling period of 400 µm. Via scanning the incident pulse-train frequency, we measured the frequency response of the crystal at different temperatures (78-350 K), which enabled us to determine the temperature dependence of the refractive index and thermo-optic coefficient of the PPLN crystal around 275 GHz with very high precision. We further studied the variation of THz generation efficiency with temperature in detail to understand the temperature dependence of THz absorption in PPLN material. The technique employed is quite general and could be applied to both other frequency ranges and nonlinear crystals.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"13 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inkjet-printed waveguide-coupled passive wedge-shaped microdisk resonator with refractive index tunability 具有折射率可调性的喷墨打印波导耦合无源楔形微盘谐振器
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-05-31 DOI: 10.1364/ome.528582
Frederik van Schoonhoven, Yoshitaka Tomishige, Adrian Abazi, Alejandro Sánchez-Postigo, Jinghan Chen, Yuya Mikami, Naoya Tate, Yuji Oki, Carsten Schuck, Hiroaki Yoshioka
{"title":"Inkjet-printed waveguide-coupled passive wedge-shaped microdisk resonator with refractive index tunability","authors":"Frederik van Schoonhoven, Yoshitaka Tomishige, Adrian Abazi, Alejandro Sánchez-Postigo, Jinghan Chen, Yuya Mikami, Naoya Tate, Yuji Oki, Carsten Schuck, Hiroaki Yoshioka","doi":"10.1364/ome.528582","DOIUrl":"https://doi.org/10.1364/ome.528582","url":null,"abstract":"We incorporate a passive wedge-shaped organic microdisk supporting spatially separated whispering gallery modes into an SU-8 photonic integrated circuit (PIC) by using direct inkjet printing. This innovative method allows the mixing of multiple organic materials, enabling tunability of the refractive index of microdisks, thereby overcoming limitations of single-material resonators from conventional lithography. In this study, the microdisk resonator, with a refractive index matching that of SU-8 by mixing hyperbranched polymers, is mounted horizontally to an optical waveguide, achieving directional coupling between the microdisk and PIC at a wavelength of 1550 nm. Geometrical conditions for successful coupling were obtained by measuring the cross-sectional profile of the fabricated structure’s surface via atomic force microscopy, determining ways to adjust the coupling efficiency.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"95 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wide-mode-area slow light waveguides in valley photonic crystal heterostructures 山谷光子晶体异质结构中的宽模区慢光波导
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-05-31 DOI: 10.1364/ome.525349
Chengkun Zhang, Yasutomo Ota, Satoshi Iwamoto
{"title":"Wide-mode-area slow light waveguides in valley photonic crystal heterostructures","authors":"Chengkun Zhang, Yasutomo Ota, Satoshi Iwamoto","doi":"10.1364/ome.525349","DOIUrl":"https://doi.org/10.1364/ome.525349","url":null,"abstract":"We designed slow-light waveguides with a wide mode area based on slab-type valley photonic crystal (VPhC) heterostructures which are composed of a graphene-like PhC sandwiched by two topologically distinct VPhCs. The group velocity of the topological guided mode hosted in a VPhC heterostructure can be slowed down by shifting the VPhC lattice toward the graphene-like PhC at the domain interfaces. Simultaneously, the mode width of the slow-light topological guided mode can be widened by increasing the size of the graphene-like PhC domain. We found that employing the graphene-like structure at the center domain is crucial for realizing a topological single-guided mode in such heterostructures. Furthermore, the impact of random fluctuations in air-hole size in the graphene-like domain was numerically investigated. Our simulation results demonstrate that the transmittance for the slow-light states can be kept high as far as the size fluctuation is small although it drops faster than that for fast-light states when the disorder level increases. The designed wide-mode-area slow-light waveguides are based on hole-based PhCs, offering novel on-chip applications of topological waveguides.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and fabrication of a porous prism film for display backlight applications 设计和制造用于显示器背光的多孔棱镜薄膜
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-05-30 DOI: 10.1364/ome.528148
Fang-Hsuan Su, Ray-Hua Horng, Dong-Sing Wuu
{"title":"Design and fabrication of a porous prism film for display backlight applications","authors":"Fang-Hsuan Su, Ray-Hua Horng, Dong-Sing Wuu","doi":"10.1364/ome.528148","DOIUrl":"https://doi.org/10.1364/ome.528148","url":null,"abstract":"This study demonstrates a fabrication method of a porous brightness enhancement film (pBEF) that offers brightness enhancement, light diffusion, color shift reduction, and improved thermal stability. During the ultraviolet imprinting and solvent evaporation processes, the nano/submicron-sized air pores are generated within the polymer prism structure, and micropatterns spontaneously form on the prism surface. The inner pores ranging from 30 to 450 nm can effectively scatter light to mitigate color shift, which is caused by multiple internal reflections within the prism structure. The micropatterns have multiple rings formed one around another with 5–15-µm diameter on the prism surface improve visual quality. Moreover, the obtained functions are achieved in a single film solution, obviating the need for using multiple materials, and the fabrication process is relatively simple and fast as it is conducted under ambient conditions. When the pBEF is integrated into a liquid-crystal display backlight, it provides the brightness enhancement performance and comparable viewing angle distribution of a regular BEF combined with an additional diffuser (two films) and increases brightness by ∼8% compared to a bead prism (particle-based BEF). Additionally, it reduces the redshift (Δ<jats:italic toggle=\"yes\">xy</jats:italic>) from 0.1605 to 0.1415. Furthermore, the pBEF exhibits a lower coefficient of thermal expansion than the regular BEF.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"44 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2-W Ho:LaF3 laser intracavity pumped with a Tm:YLF laser 用 Tm:YLF 激光器进行腔内泵送的 2-W Ho:LaF3 激光器
IF 2.8 3区 材料科学
Optical Materials Express Pub Date : 2024-05-30 DOI: 10.1364/ome.525463
Chun Li, Syed Zaheer Ud Din, Yuxin Leng, Shanming Li, Yin Hang, Jiasheng Ni
{"title":"2-W Ho:LaF3 laser intracavity pumped with a Tm:YLF laser","authors":"Chun Li, Syed Zaheer Ud Din, Yuxin Leng, Shanming Li, Yin Hang, Jiasheng Ni","doi":"10.1364/ome.525463","DOIUrl":"https://doi.org/10.1364/ome.525463","url":null,"abstract":"In this paper, we explore the laser properties of a 2.1 µm Ho:LaF<jats:sub>3</jats:sub> laser intracavity pumped by a LD-pumped Tm:YLF laser. Ho:LaF<jats:sub>3</jats:sub> crystals, with a doping concentration of 2%, have been verified as a novel type of laser gain material, whose luminescence lifetime of the <jats:sup>5</jats:sup>I<jats:sub>7</jats:sub> level was up to 25.7 ms. The Ho:LaF<jats:sub>3</jats:sub> laser achieved an average output power of 2.07 W with a slope efficiency of 16.2%. The dual-wavelength output centered at 2089 nm and 2093 nm and exhibited excellent spot quality with M<jats:sup>2</jats:sup><jats:sub>x</jats:sub> and M<jats:sup>2</jats:sup><jats:sub>y</jats:sub> values of 1.19 and 1.23, respectively. Our results effectively demonstrate the impressive capability of Ho:LaF<jats:sub>3</jats:sub> crystals for generating high-power 2.1 µm mid-infrared lasers.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"126 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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